用maven搭建Spring MVC项目提供webservice

1、搭建maven项目

用maven创建web项目，webapp项目结构如下：

2、配置maven的pom.xml文件

导入springmvc、junit、json的jar包。
pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.zz</groupId>
    <artifactId>serviceDemo</artifactId>
    <packaging>war</packaging>
    <version>0.0.1-SNAPSHOT</version>
    <name>serviceDemo Maven Webapp</name>
    <url>http://maven.apache.org</url>
    <dependencies>

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>4.3.12.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.32</version>
        </dependency>

    </dependencies>
    <build>
        <finalName>serviceDemo</finalName>
    </build>
</project>

3、在web.xml中定义DispatcherServlet来响应请求

定义字符过滤器

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app 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"
    version="2.5">

    <display-name>spring mvc, restful, restTemplate, web service</display-name>

    <filter>
        <filter-name>encodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>utf-8</param-value>
        </init-param>
        <init-param>
            <param-name>forceEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <servlet>
        <servlet-name>example</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>example</servlet-name>
        <url-pattern>/example/*</url-pattern>
    </servlet-mapping>

</web-app>

3、定义dispatcherServlet的配置文件

example-servlet.xml

<?xml version="1.0" encoding="utf-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:mvc="http://www.springframework.org/schema/mvc" 
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="
            http://www.springframework.org/schema/beans
            http://www.springframework.org/schema/beans/spring-beans.xsd
            http://www.springframework.org/schema/mvc
            http://www.springframework.org/schema/mvc/spring-mvc.xsd
            http://www.springframework.org/schema/context
            http://www.springframework.org/schema/context/spring-context.xsd">

    <context:component-scan base-package="com.zz.controller"/>

    <mvc:annotation-driven />

</beans>

4、定义Controller类来处理请求

HelloWorldController.java

package com.zz.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
public class HelloWorldController {

    @RequestMapping(value="/say/{name}", produces = "application/json; charset=UTF-8")
    public @ResponseBody String say(@PathVariable String name) {
        System.out.println(name);
        return "hi, " + name;
    }

    @RequestMapping(value="/add/{name}", method=RequestMethod.POST, produces="application/json; charset=UTF-8")
    public @ResponseBody String add(@RequestBody String setJson, @PathVariable String name) {
        System.out.println(setJson + ", name: " + name);
        return setJson;
    }

}

5、测试

RestTest.java

package com.zz.restTemplate;

import java.util.HashSet;
import java.util.Set;

import org.junit.Test;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.web.client.RestTemplate;

import com.alibaba.fastjson.JSON;

public class RestTest {

    @Test
    public void get() {
        RestTemplate restTemplate = new RestTemplate();
        String response = restTemplate.getForObject("http://localhost:8080/serviceDemo/example/say/{name}", String.class, "周娜");
        System.out.println(response);
    }

    @Test
    public void post() {
        RestTemplate restTemplate = new RestTemplate();

        HttpHeaders headers = new HttpHeaders();
        MediaType type = MediaType.parseMediaType("application/json; charset=UTF-8");
        headers.setContentType(type);
        headers.add("Accept", MediaType.APPLICATION_JSON.toString());

        Set<String> set = new HashSet<>();
        set.add("aa");
        set.add("周周");

        HttpEntity<String> formEntity = new HttpEntity<String>(set.toString(), headers);

        String response = restTemplate.postForObject("http://localhost:8080/serviceDemo/example/add/{name}", formEntity, String.class, "康，峰");
        System.out.println(response);
    }

    @Test
    public void t1() {
        RestTemplate restTemplate = new RestTemplate();

        HttpHeaders headers = new HttpHeaders();
        MediaType type = MediaType.parseMediaType("application/json; charset=UTF-8");
        headers.setContentType(type);

        Set<String> storeIdSet = new HashSet<>();
        storeIdSet.add("96e90d74-5b02-455e-b0fd-daeda87b8f4f");

        System.out.println(JSON.toJSONString(storeIdSet));

        HttpEntity<String> formEntity = new HttpEntity<String>(JSON.toJSONString(storeIdSet), headers);

        String url = "http://127.0.0.1:8080/pyc_search_searchservice/service/search/recommendByIMEIORAccountIDAndStoreIds/{imei}/{accountId}/{indexField}/{queryPage}/{pageSize}/{dataType}";


        String response = restTemplate.postForObject(url, formEntity, String.class, "cookie_1518495197133", "null", "null", 1, 10, "all");
        System.out.println(response);
    }

    @Test
    public void t2() {
        RestTemplate restTemplate = new RestTemplate();
        String url = "http://127.0.0.1:8080/pyc_search_searchservice/service/search/suizhiSearchByIMEIORAccountID/{imei}/{accountId}/{indexField}/{queryPage}/{pageSize}/{dataType}";
        String response = restTemplate.getForObject(url, String.class, "cookie_1518495197133", "null", "null", 1, 10, "all");
        System.out.println(response);
    }

}