rest版的webservice

2019-11-14 21:00:49

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rest版的webservice

為了學習app做打算今天就自學了下webservice，rest應該是其中一種還有種就是soap，目前就先舉個rest的demo吧

　準備ws的jar和sPRing的jar，如何要連接數據的話就自行準備這邊就不提供了

　下載jar：http://download.csdn.net/detail/taopeng_100/7827035

　下載好jar之后將其放入lib下就可以進行配置了

　創建個項目名叫wsTest

　首先配置spring配置文件spring-source.xml 代碼如下：

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"     xmlns:context="http://www.springframework.org/schema/context"    xmlns:aop="http://www.springframework.org/schema/aop"     xmlns:tx="http://www.springframework.org/schema/tx"    xmlns:jaxws="http://cxf.apache.org/jaxws"    xmlns:jaxrs="http://cxf.apache.org/jaxrs"    xmlns:jee="http://www.springframework.org/schema/jee"    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         http://www.springframework.org/schema/tx         http://www.springframework.org/schema/tx/spring-tx-3.0.xsd         http://www.springframework.org/schema/aop          http://www.springframework.org/schema/aop/spring-aop-3.0.xsd         http://www.springframework.org/schema/jee         http://www.springframework.org/schema/jee/spring-jee-3.2.xsd         http://cxf.apache.org/jaxws         http://cxf.apache.org/schemas/jaxws.xsd         http://cxf.apache.org/jaxrs         http://cxf.apache.org/schemas/jaxrs.xsd">    <context:annotation-config />    <context:component-scan base-package="com.tp.soft.web.*" />        <import resource="classpath:META-INF/cxf/cxf.xml" />    <import resource="classpath:META-INF/cxf/cxf-extension-soap.xml" />    <import resource="classpath:META-INF/cxf/cxf-servlet.xml" />        <jaxrs:server id="restServiceContainer" address="/rest">        <jaxrs:serviceBeans>            <bean class="com.tp.soft.web.ws.impl.LoginServiceImpl" />        </jaxrs:serviceBeans>        <jaxrs:extensionMappings>            <entry key="json" value="application/json" />            <entry key="xml" value="application/xml" />        </jaxrs:extensionMappings>        <jaxrs:languageMappings>            <entry key="en" value="en-gb"></entry>        </jaxrs:languageMappings>        <jaxrs:providers>            <bean class="org.codehaus.jackson.jaxrs.JacksonJsonProvider" />        </jaxrs:providers>    </jaxrs:server></beans>

然后在web.xml里進行配置，代碼如下：

<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"    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>webService</display-name>    <context-param>        <param-name>contextConfigLocation</param-name>        <param-value>classpath:spring-source.xml</param-value>    </context-param>    <servlet>        <display-name>CXFServlet</display-name>        <servlet-name>CXFServlet</servlet-name>        <servlet-class>org.apache.cxf.transport.servlet.CXFServlet</servlet-class>        <load-on-startup>0</load-on-startup>    </servlet>    <servlet-mapping>        <servlet-name>CXFServlet</servlet-name>        <url-pattern>/ws/*</url-pattern>    </servlet-mapping>        <listener>        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>    </listener></web-app>

然后就是寫接口了

package com.tp.soft.web.ws;import java.util.Map;import javax.jws.WebService;@WebServicepublic interface LoginService {    public abstract Map<String, Object> doLogin(String username, String passWord);}

實現類做了個很簡單的傳入賬號密碼返回一個賬號密碼對象的json代碼：

package com.tp.soft.web.ws.impl;import java.util.HashMap;import java.util.Map;import javax.ws.rs.FormParam;import javax.ws.rs.POST;import javax.ws.rs.Path;import javax.ws.rs.Produces;import javax.ws.rs.core.MediaType;import com.tp.soft.web.common.entity.Result;import com.tp.soft.web.entity.User;import com.tp.soft.web.ws.LoginService;@Path("/loginService")public class LoginServiceImpl implements LoginService{    @POST    @Path(value="/login")    @Produces(MediaType.APPLICATION_JSON)    public Map<String, Object> doLogin(@FormParam(value="username") String username, @FormParam(value="password") String password) {        Result result = new Result();        if(username.equals("zs") && password.equals("123")){            User user = new User();            user.setUsername(username);            user.setPassword(password);            Map<String, Object> map = new HashMap<String, Object>();            map.put("user", user);            result.setMap(map);            return map;        }        return null;    }}

此時可以直接通過瀏覽器訪問地址：http://xxx.xxx.xx.x:8081/wsTest/ws/rest/loginService/login?username="zs"&password="123" 特別注意這邊訪問的是通過get的如果要能訪問就要講@POST改成@GET

服務器寫好了，下面就來寫客服端的代碼，客戶端主要就是獲取user對象的json，代碼如下：

package com.tp.soft.client;import java.io.IOException;import java.util.Map;import org.apache.commons.httpclient.HttpClient;import org.apache.commons.httpclient.HttpException;import org.apache.commons.httpclient.NameValuePair;import org.apache.commons.httpclient.methods.PostMethod;import com.google.gson.Gson;import com.google.gson.GsonBuilder;import com.google.gson.reflect.TypeToken;public class A {    public static void main(String[] args) {        String url = "http://122.226.178.54:8081/wsTest1/ws/rest/loginService/login";        HttpClient client = new HttpClient();        PostMethod method = new PostMethod(url);        NameValuePair[] data = {new NameValuePair("username", "zs"), new NameValuePair("password", "123")};        method.setRequestBody(data);        try {            int statusCode = client.executeMethod(method);            if(statusCode == 200){                String strJson = method.getResponseBodyAsString();                System.out.println(strJson);                Gson gson = new GsonBuilder().create();                Map<String, User> map = gson.fromJson(strJson, new TypeToken<Map<String, User>>(){}.getType());                System.out.println(map.get("user").getUsername());            }        } catch (HttpException e) {            e.printStackTrace();        } catch (IOException e) {            e.printStackTrace();        }    }}

運行下就能看到結果了