Spring 下 MyBatis 的基本使用

 1         <!-- mybatis核心包 -->
 2         <dependency>
 3             <groupId>org.mybatis</groupId>
 4             <artifactId>mybatis</artifactId>
 5         </dependency>
 6         <!--mybatis spring 插件 -->
 7         <dependency>
 8             <groupId>org.mybatis</groupId>
 9             <artifactId>mybatis-spring</artifactId>
10         </dependency>
11         <!-- Mysql数据库驱动包 -->
12         <dependency>
13             <groupId>mysql</groupId>
14             <artifactId>mysql-connector-java</artifactId>
15         </dependency>
16         <!-- connection pool -->
17         <dependency>
18             <groupId>com.alibaba</groupId>
19             <artifactId>druid</artifactId>
20             <!--<scope>runtime</scope>-->
21         </dependency>

 1 #MySQL
 2 jdbc.driver=com.mysql.jdbc.Driver
 3 
 4 #基本属性 url、user、password
 5 jdbc.url=jdbc:mysql://localhost:3306/mybatis?useUnicode=true&characterEncoding=UTF-8&allowMultiQueries=true
 6 jdbc.username=root
 7 jdbc.password=liumeng
 8 
 9 #配置初始化大小、最小、最大
10 jdbc.initialSize=1
11 jdbc.minIdle=1
12 jdbc.maxActive=20
13 
14 #配置获取连接等待超时的时间
15 jdbc.maxWait=60000
16 
17 #配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒
18 jdbc.timeBetweenEvictionRunsMillis=60000
19 
20 #配置一个连接在池中最小生存的时间，单位是毫秒
21 jdbc.minEvictableIdleTimeMillis=300000
22 
23 jdbc.validationQuery=SELECT 'x'
24 jdbc.testWhileIdle=true
25 jdbc.testOnBorrow=false
26 jdbc.testOnReturn=false
27 
28 #打开PSCache，并且指定每个连接上PSCache的大小
29 jdbc.poolPreparedStatements=false
30 jdbc.maxPoolPreparedStatementPerConnectionSize=20
31 
32 #配置监控统计拦截的filters
33 jdbc.filters=stat

  1 package lm.solution.web.config.properties;
  2 
  3 import org.springframework.beans.factory.annotation.Value;
  4 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
  5 import org.springframework.context.annotation.PropertySource;
  6 import org.springframework.stereotype.Component;
  7 
  8 @Component(value = "dbConfig")
  9 @PropertySource("classpath:dbconfig.properties")
 10 public class DbConfig {
 11 
 12     @Value("${jdbc.url}")
 13     private String url;
 14     public String getUrl(){
 15         return this.url;
 16     }
 17 
 18     @Value("${jdbc.username}")
 19     private String username;
 20     public String getUsername(){
 21         return this.username;
 22     }
 23 
 24     @Value("${jdbc.password}")
 25     private String password;
 26     public String getPassword(){
 27         return this.password;
 28     }
 29 
 30     @Value("${jdbc.initialSize}")
 31     private Integer initialSize;
 32     public Integer getInitialSize(){
 33         return this.initialSize;
 34     }
 35 
 36     @Value("${jdbc.minIdle}")
 37     private Integer minIdle;
 38     public Integer getMinIdle(){
 39         return this.minIdle;
 40     }
 41 
 42     @Value("${jdbc.maxActive}")
 43     private Integer maxActive;
 44     public Integer getMaxActive(){
 45         return this.maxActive;
 46     }
 47 
 48     @Value("${jdbc.maxWait}")
 49     private Long maxWait;
 50     public Long getMaxWait() {
 51         return this.maxWait;
 52     }
 53 
 54     @Value("${jdbc.timeBetweenEvictionRunsMillis}")
 55     private Long timeBetweenEvictionRunsMillis;
 56     public Long getTimeBetweenEvictionRunsMillis(){
 57         return this.timeBetweenEvictionRunsMillis;
 58     }
 59 
 60     @Value("${jdbc.minEvictableIdleTimeMillis}")
 61     private Long minEvictableIdleTimeMillis;
 62     public Long getMinEvictableIdleTimeMillis(){
 63         return this.minEvictableIdleTimeMillis;
 64     }
 65 
 66     @Value("${jdbc.validationQuery}")
 67     private String validationQuery;
 68     public String getValidationQuery(){
 69         return this.validationQuery;
 70     }
 71 
 72     @Value("${jdbc.testWhileIdle}")
 73     private Boolean testWhileIdle;
 74     public Boolean getTestWhileIdle(){
 75         return this.testWhileIdle;
 76     }
 77 
 78     @Value("${jdbc.testOnBorrow}")
 79     private Boolean testOnBorrow;
 80     public Boolean getTestOnBorrow(){
 81         return this.testOnBorrow;
 82     }
 83 
 84     @Value("${jdbc.testOnReturn}")
 85     private Boolean testOnReturn;
 86     public Boolean getTestOnReturn(){
 87         return this.testOnReturn;
 88     }
 89 
 90     @Value("${jdbc.poolPreparedStatements}")
 91     private Boolean poolPreparedStatements;
 92     public Boolean getPoolPreparedStatements(){
 93         return this.poolPreparedStatements;
 94     }
 95 
 96     @Value("${jdbc.maxPoolPreparedStatementPerConnectionSize}")
 97     private Integer maxPoolPreparedStatementPerConnectionSize;
 98     public Integer getMaxPoolPreparedStatementPerConnectionSize(){
 99         return this.maxPoolPreparedStatementPerConnectionSize;
100     }
101 
102     @Value("${jdbc.filters}")
103     private String filters;
104     public String getFilters(){
105         return this.filters;
106     }
107 
108     private final static Object object=new Object();
109     private static DbConfig config;
110     public static DbConfig getConfig(){
111         return config;
112     }
113 
114     static {
115         synchronized(object) {
116             AnnotationConfigApplicationContext configContext = new AnnotationConfigApplicationContext(DbConfig.class);
117             config = (DbConfig) configContext.getBean("dbConfig");
118         }
119     }
120 
121 
122 }

 1 package lm.solution.web.config.beans;
 2 
 3 import com.alibaba.druid.pool.DruidDataSource;
 4 import lm.solution.web.config.properties.DbConfig;
 5 import org.mybatis.spring.SqlSessionFactoryBean;
 6 import org.mybatis.spring.mapper.MapperScannerConfigurer;
 7 import org.springframework.context.annotation.Bean;
 8 import org.springframework.context.annotation.Configuration;
 9 import org.springframework.jdbc.datasource.DataSourceTransactionManager;
10 
11 import java.sql.SQLException;
12 
13 @Configuration
14 public class MySqlBean {
15 
16     // dataSource 配置数据源
17     @Bean(
18             name = "dataSource",
19             initMethod = "init",
20             destroyMethod = "close"
21     )
22     public DruidDataSource druidDataSource(){
23 
24         try {
25 
26             //
27             DbConfig db=DbConfig.getConfig();
28 
29             //
30             DruidDataSource dataSource = new DruidDataSource();
31             dataSource.setUrl(db.getUrl());
32             dataSource.setUsername(db.getUsername());
33             dataSource.setPassword(db.getPassword());
34             dataSource.setInitialSize(db.getInitialSize());
35             dataSource.setMinIdle(db.getMinIdle());
36             dataSource.setMaxActive(db.getMaxActive());
37             dataSource.setMaxWait(db.getMaxWait());
38             dataSource.setTimeBetweenEvictionRunsMillis(db.getTimeBetweenEvictionRunsMillis());
39             dataSource.setMinEvictableIdleTimeMillis(db.getMinEvictableIdleTimeMillis());
40             dataSource.setValidationQuery(db.getValidationQuery());
41             dataSource.setTestWhileIdle(db.getTestWhileIdle());
42             dataSource.setTestOnBorrow(db.getTestOnBorrow());
43             dataSource.setTestOnReturn(db.getTestOnReturn());
44             dataSource.setPoolPreparedStatements(db.getPoolPreparedStatements());
45             dataSource.setMaxPoolPreparedStatementPerConnectionSize(db.getMaxPoolPreparedStatementPerConnectionSize());
46             dataSource.setFilters(db.getFilters());
47             return dataSource;
48 
49         }catch (SQLException se){
50             se.printStackTrace();
51         }
52 
53         return null;
54 
55     }
56 
57     // mybatis和spring完美整合，不需要mybatis的配置映射文件
58     @Bean(name = "sqlSessionFactory")
59     public SqlSessionFactoryBean sqlSessionFactoryBean(DruidDataSource dataSource){
60 
61         SqlSessionFactoryBean factory=new SqlSessionFactoryBean();
62         factory.setDataSource(dataSource);
63         return factory;
64 
65     }
66 
67     // DAO接口所在包名，Spring会自动查找其下的类
68     @Bean
69     public MapperScannerConfigurer mapperScannerConfigurer(){
70 
71         MapperScannerConfigurer scannerConfigurer=new MapperScannerConfigurer();
72         scannerConfigurer.setBasePackage("lm.solution.mapper");
73         scannerConfigurer.setSqlSessionFactoryBeanName("sqlSessionFactory");
74         return scannerConfigurer;
75 
76     }
77 
78     // 对dataSource 数据源进行事务管理
79     @Bean(name = "transactionManager")
80     public DataSourceTransactionManager dataSourceTransactionManager( DruidDataSource dataSource ){
81 
82         DataSourceTransactionManager transactionManager=new DataSourceTransactionManager();
83         transactionManager.setDataSource(dataSource);
84         return transactionManager;
85 
86     }
87 
88 
89 
90 }

 1 package lm.solution.pojo.entity;
 2 
 3 public class User {
 4     private Integer id;
 5 
 6     private String name;
 7 
 8     private String age;
 9 
10     private Integer salary;
11 
12     public Integer getId() {
13         return id;
14     }
15 
16     public void setId(Integer id) {
17         this.id = id;
18     }
19 
20     public String getName() {
21         return name;
22     }
23 
24     public void setName(String name) {
25         this.name = name == null ? null : name.trim();
26     }
27 
28     public String getAge() {
29         return age;
30     }
31 
32     public void setAge(String age) {
33         this.age = age == null ? null : age.trim();
34     }
35 
36     public Integer getSalary() {
37         return salary;
38     }
39 
40     public void setSalary(Integer salary) {
41         this.salary = salary;
42     }
43 }

 1 package lm.solution.mapper;
 2 
 3 import lm.solution.pojo.entity.User;
 4 import lm.solution.mapper.provider.UserDynaSqlProvider;
 5 import org.apache.ibatis.annotations.*;
 6 
 7 import java.util.List;
 8 
 9 public interface UserMapper {
10 
11     @Select(" select * from user ")
12     List<User> findAllUsers();
13 
14     @Select(" select * from user where id=#{id} ")
15     User findById(long id);
16 
17     @Select(" select * from user where name=#{name} ")
18     User findByName(String name);
19 
20     @InsertProvider(type= UserDynaSqlProvider.class,method = "saveUser")
21     @Options(useGeneratedKeys = true,keyColumn = "id")
22     Integer saveUser(User user);
23 
24     @UpdateProvider(type = UserDynaSqlProvider.class,method = "updateUser")
25     Integer updateUser(User user);
26 
27     @Delete(" delete from user where id=#{id} ")
28     Integer deleteUser(long id);
29 
30     @Delete(" delete from user where 1=1 ")
31     Integer deleteAllUsers();
32 }

 1 package lm.solution.mapper.provider;
 2 
 3 import lm.solution.pojo.entity.User;
 4 import org.apache.ibatis.jdbc.SQL;
 5 
 6 public class UserDynaSqlProvider {
 7 
 8 
 9     public String saveUser(final User user) {
10         return new SQL() {
11             {
12                 INSERT_INTO("user");
13                 if(user.getName()!=null&&!"".equals(user.getName())){
14                     VALUES("name","#{name}");
15                 }
16                 if(user.getAge()!=null&&!"".equals(user.getAge())){
17                     VALUES("age","#{age}");
18                 }
19                 if(user.getSalary()!=null){
20                     VALUES("salary","#{salary}");
21                 }
22             }
23         }.toString();
24     }
25 
26     public String updateUser(final User user){
27         return  new SQL(){
28             {
29                 UPDATE("user");
30                 if(user.getName()!=null && !"".equals(user.getName())){
31                     SET(" name=#{name} ");
32                 }
33                 if(user.getAge()!=null && !"".equals(user.getAge())){
34                     SET(" age=#{age} ");
35                 }
36                 if(user.getSalary()!=null){
37                     SET(" salary=#{salary} ");
38                 }
39                 WHERE(" id=#{id} ");
40             }
41         }.toString();
42     }
43 
44 
45 }

 1 package lm.solution.service.mysql;
 2 
 3 import lm.solution.pojo.entity.User;
 4 import java.util.List;
 5 
 6 public interface UserService {
 7 
 8     List<User> findAllUsers();
 9 
10     User findById(long id);
11 
12     boolean isUserExist(User user);
13 
14     void saveUser(User user);
15 
16     void updateUser(User user);
17 
18     void deleteUser(long id);
19 
20     void deleteAllUsers();
21 
22 }

 1 package lm.solution.service.mysql.impl;
 2 
 3 import lm.solution.pojo.entity.User;
 4 import lm.solution.mapper.UserMapper;
 5 import lm.solution.service.mysql.UserService;
 6 import org.springframework.beans.factory.annotation.Autowired;
 7 import org.springframework.stereotype.Service;
 8 import org.springframework.transaction.annotation.Transactional;
 9 import org.springframework.transaction.annotation.Propagation;
10 import org.springframework.transaction.annotation.Isolation;
11 import java.util.List;
12 
13 @Transactional(propagation = Propagation.REQUIRED,isolation = Isolation.DEFAULT)
14 @Service("userService")
15 public class UserServiceImpl implements UserService {
16 
17     @Autowired
18     private UserMapper userMapper;
19 
20 
21     @Override
22     public List<User> findAllUsers() {
23         return userMapper.findAllUsers();
24         //return null;
25     }
26 
27     @Override
28     public User findById(long id) {
29         //return null;
30 
31         return userMapper.findById(id);
32     }
33 
34     @Override
35     public boolean isUserExist(User user) {
36 
37         User userDB=userMapper.findByName(user.getName());
38         if(userDB==null){
39             return  false;
40         }else {
41             return true;
42         }
43     }
44 
45     @Override
46     public void saveUser(User user) {
47         userMapper.saveUser(user);
48     }
49 
50     @Override
51     public void updateUser(User user) {
52         userMapper.updateUser(user);
53     }
54 
55     @Override
56     public void deleteUser(long id) {
57         userMapper.deleteUser(id);
58     }
59 
60     @Override
61     public void deleteAllUsers() {
62         userMapper.deleteAllUsers();
63     }
64 
65 
66 }

  1 package lm.solution.web.controller.db;
  2 
  3 import com.fasterxml.jackson.core.JsonProcessingException;
  4 import com.fasterxml.jackson.databind.ObjectMapper;
  5 import lm.solution.pojo.entity.User;
  6 import lm.solution.service.mysql.UserService;
  7 import org.springframework.beans.factory.annotation.Autowired;
  8 import org.springframework.beans.factory.annotation.Qualifier;
  9 import org.springframework.stereotype.Controller;
 10 import org.springframework.web.bind.annotation.*;
 11 
 12 import java.io.IOException;
 13 import java.util.List;
 14 
 15 @Controller
 16 public class MyBatisController {
 17 
 18     private static ObjectMapper objectMapper;
 19 
 20     @Autowired
 21     @Qualifier("userService")
 22     private UserService userService;
 23 
 24     static {
 25         objectMapper = new ObjectMapper();
 26     }
 27 
 28     @RequestMapping(
 29             value = "/mybatis/userall",
 30             method = RequestMethod.GET,
 31             produces = {"application/json;charset=UTF-8"})
 32     @ResponseBody
 33     public String allUsers() {
 34 
 35         try {
 36             List<User> users = userService.findAllUsers();
 37             return objectMapper.writeValueAsString(users);
 38         } catch (IOException ioe) {
 39             ioe.printStackTrace();
 40             return "{}";
 41         }
 42 
 43     }
 44 
 45     @RequestMapping(
 46             value = "/mybatis/{id}",
 47             method = RequestMethod.GET,
 48             produces = {"application/json;charset=UTF-8"})
 49     @ResponseBody
 50     public String getUserById(@PathVariable("id") long id) {
 51 
 52         try {
 53             User user = userService.findById(id);
 54             return objectMapper.writeValueAsString(user);
 55         } catch (IOException ioe) {
 56             ioe.printStackTrace();
 57             return "{}";
 58         }
 59     }
 60 
 61     @RequestMapping(
 62             value = "/mybatis/create",
 63             method = RequestMethod.POST,
 64             consumes = {"application/json"},
 65             produces = {"application/json;charset=UTF-8"})
 66     @ResponseBody
 67     public String create(@RequestBody User user) {
 68 
 69         try {
 70 
 71             userService.saveUser(user);
 72             return objectMapper.writeValueAsString(user);
 73 
 74         }catch (JsonProcessingException jpe){
 75             jpe.printStackTrace();
 76         }
 77 
 78         return "{}";
 79 
 80     }
 81 
 82     @RequestMapping(
 83             value = "/mybatis/update",
 84             method = RequestMethod.PUT,
 85             consumes = {"application/json"},
 86             produces = {"application/json;charset=UTF-8"})
 87     @ResponseBody
 88     public String update(@RequestBody User user) {
 89 
 90         try {
 91 
 92             userService.updateUser(user);
 93             return objectMapper.writeValueAsString(user);
 94 
 95         }catch (JsonProcessingException jpe){
 96             jpe.printStackTrace();
 97         }
 98 
 99         return "{}";
100 
101     }
102 
103     @RequestMapping(
104             value = "/mybatis/{id}",
105             method = RequestMethod.DELETE,
106             produces = {"application/json;charset=UTF-8"})
107     @ResponseBody
108     public String deleteById(@PathVariable("id") long id) {
109         userService.deleteUser(id);
110         return "success";
111 
112     }
113 
114     @RequestMapping(
115             value = "/mybatis",
116             method = RequestMethod.DELETE,
117             produces = {"application/json;charset=UTF-8"})
118     @ResponseBody
119     public String deleteAll() {
120         userService.deleteAllUsers();
121         return "success";
122 
123     }
124 
125 }

  1 <%--
  2   Created by IntelliJ IDEA.
  3   User: liumeng
  4   Date: 2018/3/2
  5   Time: 14:25
  6   To change this template use File | Settings | File Templates.
  7 --%>
  8 <%@ page contentType="text/html;charset=UTF-8" language="java" %>
  9 <html>
 10 <head>
 11     <title>MySQL op by MyBatis</title>
 12     <script src="/assets/js/jquery-3.3.1.js"></script>
 13 </head>
 14 <body>
 15 <p>
 16     <button id="btnAllusers">GET-查看所有</button>
 17     <br>
 18 <div id="getAllusers"></div>
 19 <br>
 20 <script>
 21     $(function () {
 22         $('#btnAllusers').on("click", function (e) {
 23             var request = $.ajax({
 24                 url: "/mybatis/userall",
 25                 method: "GET"
 26             });
 27 
 28             request.done(function (data) {
 29                 if (data) {
 30                     var html = "";
 31                     for (var i = 0; i < data.length; i++) {
 32                         html += "<span>id</sapn>:<span>" + data[i].id + "</span><br>";
 33                         html += "<span>name</sapn>:<span>" + data[i].name + "</span><br>";
 34                         html += "<span>age</sapn>:<span>" + data[i].age + "</span><br>";
 35                         html += "<span>salary</sapn>:<span>" + data[i].salary + "</span><br>";
 36                         html += "<br>----------------------------------------------------------<br>";
 37                     }
 38                     $("#getAllusers").html(html);
 39                 }
 40             });
 41 
 42             request.fail(function (jqXHR, textStatus) {
 43                 alert("Request failed: " + textStatus);
 44             });
 45         });
 46     });
 47 </script>
 48 <hr>
 49 <button id="btnUserByID">GET-查看ByID</button>
 50 <br>
 51 <span>ID:</span><input type="text" id="userbyIDtx">
 52 <br>
 53 <div id="UserByID"></div>
 54 <br>
 55 <script>
 56     $(function () {
 57         $('#btnUserByID').on("click", function (e) {
 58             var request = $.ajax({
 59                 url: "/mybatis/"+$("#userbyIDtx").val(),
 60                 method: "GET",
 61                 dataType:"json"
 62             });
 63 
 64             request.done(function (data) {
 65                 if (data) {
 66                     var html = "";
 67                     html += "<span>id</sapn>:<span>" + data.id + "</span><br>";
 68                     html += "<span>name</sapn>:<span>" + data.name + "</span><br>";
 69                     html += "<span>age</sapn>:<span>" + data.age + "</span><br>";
 70                     html += "<span>salary</sapn>:<span>" + data.salary + "</span><br>";
 71                     html += "<br>----------------------------------------------------------<br>";
 72                     $("#UserByID").html(html);
 73                 }
 74             });
 75 
 76             request.fail(function (jqXHR, textStatus) {
 77                 alert("Request failed: " + textStatus);
 78             });
 79         });
 80     });
 81 </script>
 82 <hr>
 83 <button id="createOne">POST-创建一个</button>
 84 <br>
 85 <span>ID:</span><input type="text" disabled="disabled" ><br>
 86 <span>Name:</span><input type="text" id="createName" ><br>
 87 <span>Age:</span><input type="text" id="createAge" ><br>
 88 <span>Salary:</span><input type="text" id="createSalary" >
 89 <br>
 90 <div id="createUser"></div>
 91 <br>
 92 <script>
 93     $(function () {
 94         $('#createOne').on("click", function (e) {
 95             var data={
 96                 name:$("#createName").val(),
 97                 age:$("#createAge").val(),
 98                 salary:$("#createSalary").val()
 99             };
100 
101             var request = $.ajax({
102                 url: "/mybatis/create",
103                 method: "POST",
104                 data:JSON.stringify(data),
105                 contentType:"application/json"
106                 //dataType:"json"
107             });
108 
109             request.done(function (data) {
110                 if (data) {
111                     var html = "";
112                     html += "<span>id</sapn>:<span>" + data.id + "</span><br>";
113                     html += "<span>name</sapn>:<span>" + data.name + "</span><br>";
114                     html += "<span>age</sapn>:<span>" + data.age + "</span><br>";
115                     html += "<span>salary</sapn>:<span>" + data.salary + "</span><br>";
116                     html += "<br>----------------------------------------------------------<br>";
117                     $("#createUser").html(html);
118                 }
119             });
120 
121             request.fail(function (jqXHR, textStatus) {
122                 alert("Request failed: " + textStatus);
123             });
124         });
125     });
126 </script>
127 <hr>
128 <button id="putOne">PUT-更新一个</button>
129 <br>
130 <span>ID:</span><input type="text" id="putId" ><br>
131 <span>Name:</span><input type="text" id="putName" ><br>
132 <span>Age:</span><input type="text" id="putAge" ><br>
133 <span>Salary:</span><input type="text" id="putSalary" >
134 <br>
135 <div id="putUser"></div>
136 <br>
137 <script>
138     $(function () {
139         $('#putOne').on("click", function (e) {
140             var data={
141                 id:$("#putId").val(),
142                 name:$("#putName").val(),
143                 age:$("#putAge").val(),
144                 salary:$("#putSalary").val()
145             };
146 
147             var request = $.ajax({
148                 url: "/mybatis/update",
149                 method: "PUT",
150                 data:JSON.stringify(data),
151                 contentType:"application/json"
152                 //dataType:"json"
153             });
154 
155             request.done(function (data) {
156                 if (data) {
157                     var html = "";
158                     html += "<span>id</sapn>:<span>" + data.id + "</span><br>";
159                     html += "<span>name</sapn>:<span>" + data.name + "</span><br>";
160                     html += "<span>age</sapn>:<span>" + data.age + "</span><br>";
161                     html += "<span>salary</sapn>:<span>" + data.salary + "</span><br>";
162                     html += "<br>----------------------------------------------------------<br>";
163                     $("#createUser").html(html);
164                 }
165             });
166 
167             request.fail(function (jqXHR, textStatus) {
168                 alert("Request failed: " + textStatus);
169             });
170         });
171     });
172 </script>
173 <hr>
174 <button id="deleteOne">DELETE-删除一个</button>
175 <br>
176 <span>ID:</span><input type="text" id="deleteId" ><br>
177 <!--<span>Name:</span><input type="text" id="putName" ><br>
178 <span>Age:</span><input type="text" id="putAge" ><br>
179 <span>Salary:</span><input type="text" id="putSalary" >-->
180 <br>
181 <div id="deleteUser"></div>
182 <br>
183 <script>
184     $(function () {
185         $('#deleteOne').on("click", function (e) {
186             // var data={
187             //     id:$("#putId").val(),
188             //     name:$("#putName").val(),
189             //     age:$("#putAge").val(),
190             //     salary:$("#putSalary").val()
191             // };
192 
193             var request = $.ajax({
194                 url: "/mybatis/"+$("#deleteId").val(),
195                 method: "DELETE",
196                 // data:JSON.stringify(data),
197                 contentType:"application/json"
198                 //dataType:"json"
199             });
200 
201             request.done(function (data) {
202                 if (data) {
203                     var html = "";
204                     // html += "<span>id</sapn>:<span>" + data.id + "</span><br>";
205                     // html += "<span>name</sapn>:<span>" + data.name + "</span><br>";
206                     // html += "<span>age</sapn>:<span>" + data.age + "</span><br>";
207                     // html += "<span>salary</sapn>:<span>" + data.salary + "</span><br>";
208                     // html += "<br>----------------------------------------------------------<br>";
209                     $("#createUser").html(data);
210                 }
211             });
212 
213             request.fail(function (jqXHR, textStatus) {
214                 alert("Request failed: " + textStatus);
215             });
216         });
217     });
218 </script>
219 <hr>
220 <button id="deleteAll">DELETE-删除所有</button>
221 <br>
222 <div id="deleteUserAll"></div>
223 <br>
224 <script>
225     $(function () {
226         $('#deleteAll').on("click", function (e) {
227             var request = $.ajax({
228                 url: "/mybatis",
229                 method: "DELETE",
230                 // data:JSON.stringify(data),
231                 contentType:"application/json"
232                 //dataType:"json"
233             });
234 
235             request.done(function (data) {
236                 if (data) {
237                     var html = "";
238                     // html += "<span>id</sapn>:<span>" + data.id + "</span><br>";
239                     // html += "<span>name</sapn>:<span>" + data.name + "</span><br>";
240                     // html += "<span>age</sapn>:<span>" + data.age + "</span><br>";
241                     // html += "<span>salary</sapn>:<span>" + data.salary + "</span><br>";
242                     // html += "<br>----------------------------------------------------------<br>";
243                     $("#deleteUserAll").html(data);
244                 }
245             });
246 
247             request.fail(function (jqXHR, textStatus) {
248                 alert("Request failed: " + textStatus);
249             });
250         });
251     });
252 </script>
253 <hr>
254 </p>
255 </body>
256 </html>