springmvc rest服務deom實例

jopen 9年前發布 | 7K 次閱讀 Java SpringMVC
服務實現功能如下:
spring rest服務:
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向服務器上傳文件demo.
閑話少說,這是一個web服務，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&quot;

        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance&quot;

        xsi:schemaLocation="http://java.sun.com/xml/ns/javaee

        http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"&gt;

      <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處理的url -->  
    <servlet-mapping>  
        <servlet-name>springmvc</servlet-name>  
        <url-pattern>*.mvc</url-pattern>  
    </servlet-mapping>  
</web-app>  </pre> 


 然后看，springmvc對應的配置文件:
<beans xmlns="http://www.springframework.org/schema/beans&quot;

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance&quot;

    xmlns:p="http://www.springframework.org/schema/p&quot;

    xmlns:context="http://www.springframework.org/schema/context&quot;

    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"&gt;

<!-- spring mvc需要一個自己的配置文件,此配置文件的名字和web.xml文件中關于spring mvc相關的servlet的  
servlet name有一個契約,必須采用<servlet-name>-servlet.xml -->  
<!-- 掃描controller包, 將標注spring注解的類自動轉化為bean, 同時完成bean的注入 -->  
<context:component-scan base-package="com.ilucky.springmvc.rest.controller" />   

<!-- 配置springmvc視圖解析器 -->  
<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>  

<!-- 設置上傳文件的最大尺寸為100MB -->  
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">  
    <property name="maxUploadSize">  
        <value>102400000</value>  
    </property>  
</bean>   

</beans> </pre> 

 馬上看get實例：
    package com.ilucky.springmvc.rest.controller;

import org.springframework.web.client.RestTemplate;  

/** 
 * 測試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("測試Spring Rest的Get方法: " + result);  
    }  
}  </pre> 



    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;  

/** 
 * 測試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("測試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();  
        }  
    }  
}  </pre> 


 post實例：
    package com.ilucky.springmvc.rest.controller;

import org.springframework.util.LinkedMultiValueMap;  
import org.springframework.util.MultiValueMap;  
import org.springframework.web.client.RestTemplate;  

/** 
 * 測試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("測試Spring Rest的Post方法: " + result);  
    }  
}  </pre> 



    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;  

/** 
 * 測試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("測試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();  
        }  
    }  
}  </pre> 


 上傳文件實例:
    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;  

/** 
 * 測試Spring Rest的文件上傳. 
 * @author IluckySi 
 * @since 20141107 
 * 注意:使用Spring Rest進行文件上傳, 
 * 需要在spring mvc對應的配置文件中,做如下配置: 
 * <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> 
        <property name="maxUploadSize"> 
            <value>102400000</value> 
        </property> 
    </bean> 
    否則會報如下異常: 
    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("測試Spring RestT的文件上傳: " + result);  
    }  
}  </pre> 



    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;  

/** 
 * 測試Spring Rest的文件上傳. 
 * @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("文件名稱是: " + fileName);  
        PrintWriter pw = null;  
        try {  
            //將文件寫入目標文件,如果有文件服務器,可以將其寫到固定的文件服務器上,測試:寫到本地文件.  
            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("測試Spring Rest的文件上傳");  
        } catch (Exception e) {  
            e.printStackTrace();  
        } finally {  
            pw.close();  
        }  
    }    
}  </pre> 


 ok! 完工！spring mvc 的rest你學會使用了嗎！
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Java SpringMVC
springmvc rest服務deom實例

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