springmvc rest服务deom实例
2018-07-20 来源：open-open
服务实现功能如下:
spring rest服务:
1.GetClient和GetController,Spring mvc rest template的get方法使用demo.
2.PostClient和PostController,Spring mvc rest template的post方法使用demo.
3.FileUploadClient和FileUploadController,Spring mvc rest template向服务器上传文件demo.
闲话少说,这是一个web服务，所以先看web.xml,
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<display-name></display-name>
<!-- 配置spring mvc的主控servlet -->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
</servlet>
<!-- 配置spring mvc处理的url -->
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>*.mvc</url-pattern>
</servlet-mapping>
</web-app>
然后看，springmvc对应的配置文件:
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<!-- spring mvc需要一个自己的配置文件,此配置文件的名字和web.xml文件中关于spring mvc相关的servlet的
servlet name有一个契约,必须采用<servlet-name>-servlet.xml -->
<!-- 扫描controller包, 将标注spring注解的类自动转化为bean, 同时完成bean的注入 -->
<context:component-scan base-package="com.ilucky.springmvc.rest.controller" />
<!-- 配置springmvc视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass">
<value>org.springframework.web.servlet.view.JstlView</value>
</property>
<property name="prefix">
<value>/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
<!-- 设置上传文件的最大尺寸为100MB -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize">
<value>102400000</value>
</property>
</bean>
</beans>
马上看get实例：
package com.ilucky.springmvc.rest.controller;
import org.springframework.web.client.RestTemplate;
/**
* 测试Spring Rest的Get方法.
* @author IluckySi
* @since 20141107
*/
public class GetClient {
public static void main (String[] args) {
String url = "http://localhost:8080/spring-rest/get.mvc?test=get";
RestTemplate rest = new RestTemplate();
Object result = rest.getForObject(url, String.class);
System.out.println("测试Spring Rest的Get方法: " + result);
}
}
package com.ilucky.springmvc.rest.controller;
import java.io.PrintWriter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
/**
* 测试Spring Rest的Get方法.
* @author IluckySi
* @since 20141107
*/
@Controller("getController")
@Scope("prototype")
public class GetController {
@RequestMapping(value = "/get", method = RequestMethod.GET)
public void get(HttpServletRequest request, HttpServletResponse response,
@RequestParam(value = "test", required = true) String test) {
System.out.println("测试Spring Rest的Get方法: test = " + test);
PrintWriter pw = null;
try {
response.setContentType("application/xml;charset=utf-8");
pw = response.getWriter();
pw.write("<result>success</result>");
} catch (Exception e) {
e.printStackTrace();
} finally {
pw.close();
}
}
}
post实例：
package com.ilucky.springmvc.rest.controller;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.client.RestTemplate;
/**
* 测试Spring Rest的Post方法.
* @author IluckySi
* @since 20141107
*/
public class PostClient {
@SuppressWarnings({ "rawtypes", "unchecked" })
public static void main (String[] args) {
String url = "http://localhost:8080/spring-rest/post.mvc";
RestTemplate rest = new RestTemplate();
MultiValueMap<String, Object> param = new LinkedMultiValueMap();
param.add("test", "post");
Object result = rest.postForObject(url, param, String.class);
System.out.println("测试Spring Rest的Post方法: " + result);
}
}
package com.ilucky.springmvc.rest.controller;
import java.io.PrintWriter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
/**
* 测试Spring Rest的Post方法.
* @author IluckySi
* @since 20141107
*/
@Controller("postController")
@Scope("prototype")
public class PostController {
@RequestMapping(value = "/post", method = RequestMethod.POST)
public void post(HttpServletRequest request, HttpServletResponse response,
@RequestParam(value = "test", required = true) String test) {
System.out.println("测试Spring Rest的Post方法: test = " + test);
PrintWriter pw = null;
try {
response.setContentType("application/xml;charset=utf-8");
pw = response.getWriter();
pw.write("<result>success</result>");
} catch (Exception e) {
e.printStackTrace();
} finally {
pw.close();
}
}
}
上传文件实例:
package com.ilucky.springmvc.rest.controller;
import java.io.File;
import org.springframework.core.io.FileSystemResource;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.client.RestTemplate;
/**
* 测试Spring Rest的文件上传.
* @author IluckySi
* @since 20141107
* 注意:使用Spring Rest进行文件上传,
* 需要在spring mvc对应的配置文件中,做如下配置:
* <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize">
<value>102400000</value>
</property>
</bean>
否则会报如下异常:
resulted in 400 (Bad Request); invoking error handler
*/
public class FileUploadClient {
@SuppressWarnings({ "rawtypes", "unchecked" })
public static void main(String[] args) {
String url = "http://localhost:8080/spring-rest/fileUpload.mvc";
String filePath = "E:\\fileUpload.zip";
RestTemplate rest = new RestTemplate();
FileSystemResource resource = new FileSystemResource(new File(filePath));
MultiValueMap<String, Object> param = new LinkedMultiValueMap();
param.add("fileName", "fileUpload.zip");
param.add("file", resource);
Object result = rest.postForObject(url, param, String.class);
System.out.println("测试Spring RestT的文件上传: " + result);
}
}
package com.ilucky.springmvc.rest.controller;
import java.io.File;
import java.io.PrintWriter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.MultipartFile;
/**
* 测试Spring Rest的文件上传.
* @author IluckySi
* @since 20141107
*/
@Controller("fileUploadController")
@Scope("prototype")
public class FileUploadController {
@RequestMapping(value = "/fileUpload", method = RequestMethod.POST)
public void fileUpload(HttpServletRequest request, HttpServletResponse response,
@RequestParam(value = "fileName", required = true) String fileName,
@RequestParam(value = "file", required = true) MultipartFile file) {
System.out.println("文件名称是: " + fileName);
PrintWriter pw = null;
try {
//将文件写入目标文件,如果有文件服务器,可以将其写到固定的文件服务器上,测试:写到本地文件.
File server = new File("E://" + fileName);
file.transferTo(server);
response.setContentType("application/xml;charset=utf-8");
pw = response.getWriter();
pw.write("<result>success</result>");
System.out.println("测试Spring Rest的文件上传");
} catch (Exception e) {
e.printStackTrace();
} finally {
pw.close();
}
}
}
ok! 完工！spring mvc 的rest你学会使用了吗！
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