java之远程接口调用
一、通过地址栏传值
1、项目结构
2、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>test.com</groupId>
<artifactId>test-com</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>test-com Maven Webapp</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency> <!-- spring begin -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- spring end --> <!-- Spring AOP + AspectJ by shipengzhi -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>3.0.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>1.6.11</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.6.11</version>
</dependency>
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>2.1_3</version>
</dependency>
<!-- end --> <dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency> <dependency>
<groupId>net.sf.json-lib</groupId>
<artifactId>json-lib</artifactId>
<version>2.4</version>
<classifier>jdk15</classifier>
</dependency>
</dependencies>
<build>
<finalName>test-com</finalName>
</build> <properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<spring.version>3.1.2.RELEASE</spring.version>
</properties>
</project>
3、web.xml
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" > <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_3_0.xsd"
version="3.0">
<display-name>Archetype Created Web Application</display-name> <servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<!-- 设置dispatchservlet的匹配模式,通过把dispatchservlet映射到/,默认servlet会处理所有的请求,包括静态资源 -->
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping> <!-- 字符集过滤器 -->
<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>
</web-app>
4、dispatcher-servlet.xml
<?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:mvc="http://www.springframework.org/schema/mvc"
xmlns:p="http://www.springframework.org/schema/p"
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"
default-lazy-init="true"> <!-- 通过mvc:resources设置静态资源,这样servlet就会处理这些静态资源,而不通过控制器 -->
<!-- 设置不过滤内容,比如:css,jquery,img 等资源文件 -->
<mvc:resources location="/*.html" mapping="/**.html" />
<mvc:resources location="/css/*" mapping="/css/**" />
<mvc:resources location="/js/*" mapping="/js/**" />
<mvc:resources location="/images/*" mapping="/images/**" /> <!-- 添加注解驱动 -->
<mvc:annotation-driven />
<!-- 默认扫描的包路径 -->
<context:component-scan base-package="com.*" /> <!-- mvc:view-controller可以在不需要Controller处理request的情况,转向到设置的View -->
<!-- 像下面这样设置,如果请求为/,则不通过controller,而直接解析为/index.jsp -->
<bean id="viewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/" />
<property name="suffix" value=".jsp" />
</bean> <!-- 日志自定义注解拦截器 -->
<mvc:interceptors>
<mvc:interceptor>
<mvc:mapping path="/**"/>
<bean class="com.log.SystemLogAspect"></bean>
</mvc:interceptor>
</mvc:interceptors> </beans>
5、TestController.java
package com.controller; import com.log.Log;
import com.remote.RemoteDemo;
import net.sf.json.JSONObject;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping; /**
* Created by sunjf on 2016/6/26.
*/
@Controller
public class TestController { @Log(desc = "log测试")
@RequestMapping(value = "test1")
public String test1(){
String result = RemoteDemo.remoteJsonRequest("http://localhost:8080/test2?username=sun&password=123", 5000, new JSONObject());
System.out.println(result);
return "success";
} }
6、RemoteDemo.java
package com.remote; import net.sf.json.JSONObject; import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL; /**
* Created by Administrator on 2016/6/27.
*/
public class RemoteDemo { public static String remoteJsonRequest(String url, int timeout, JSONObject object) {
URL connect;
StringBuffer data = new StringBuffer();
try {
connect = new URL(url);
HttpURLConnection connection = (HttpURLConnection) connect.openConnection();
connection.setRequestMethod("POST");
connection.setDoOutput(true);
connection.setReadTimeout(timeout);
connection.setRequestProperty("Content-Type", "application/json");
OutputStreamWriter paramout = new OutputStreamWriter(connection.getOutputStream(), "UTF-8");
paramout.write(object.toString());
paramout.flush();
InputStream inputStream = connection.getInputStream();
InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "UTF-8");
BufferedReader reader = new BufferedReader(inputStreamReader); String line;
while ((line = reader.readLine()) != null) {
data.append(line);
}
paramout.close();
reader.close();
} catch (Exception e) {
e.printStackTrace();
}
return data.toString();
} }
7、调用另一项目中的借口(TestController.java)
package com.controller; import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody; /**
* Created by sunjf on 2016/6/26.
*/
@Controller
public class TestController { @RequestMapping(value = "test2")
@ResponseBody
public String test2(String username, String password){
System.out.println(username + " | " + password);
return username + " | " + password;
} }
8、index.jsp
<html>
<body>
<h2>Hello World!</h2>
<form action="test1" method="post">
<input type="submit" name="submit">
</form> </body>
</html>
9、success.jsp
<html>
<body>
<h2>Hello Success!</h2>
</body>
</html>
二、同过jsonObject传值,通过object接收
1、TestController.java,请求端发送请求
package com.controller; import com.log.Log;
import com.remote.RemoteDemo;
import net.sf.json.JSONObject;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping; /**
* Created by sunjf on 2016/6/26.
*/
@Controller
public class TestController { @Log(desc = "log测试")
@RequestMapping(value = "test1")
public String test1(){
JSONObject jsonObject = new JSONObject();
jsonObject.put("username", "sun");
jsonObject.put("password", "123");
String result = RemoteDemo.remoteJsonRequest("http://localhost:8080/test2", 5000, jsonObject);
System.out.println(result);
return "success";
} }
2、TestController.java,被访问端接口
package com.controller; import org.springframework.stereotype.Controller;
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; /**
* Created by sunjf on 2016/6/26.
*/
@Controller
public class TestController { @RequestMapping(value = "test2", method = RequestMethod.POST, produces="application/json")
@ResponseBody
public String test2(@RequestBody User user){
System.out.println(user.toString());
return user.toString();
} }
注:注意此时的@RequestBody注解,为此需要在被访问端引入依赖
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.8</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
3、User.java,接收实体类
package com.controller; /**
* Created by Administrator on 2016/6/28.
*/
public class User { private String username;
private String password; @Override
public String toString() {
return "User{" +
"username='" + username + '\'' +
", password='" + password + '\'' +
'}';
} public String getUsername() {
return username;
} public void setUsername(String username) {
this.username = username;
} public String getPassword() {
return password;
} public void setPassword(String password) {
this.password = password;
}
}
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