<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.example</groupId>
<artifactId>auto_api</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<maven.compiler.target>1.8</maven.compiler.target>
<maven.compiler.source>1.8</maven.compiler.source>
<!-- 文件拷贝时的编码 -->
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<!-- 编译时的编码 -->
<maven.compiler.encoding>UTF-8</maven.compiler.encoding>
<aspectj.version>1.9.2</aspectj.version>
</properties>
<dependencies>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5.7</version>
</dependency>
</dependencies>
</project>
HttpClient 是Apache Jakarta Common 下的子项目,可以用来提供高效的、最新的、功能丰富的支持 HTTP 协议的客户端编程工具包,并且它支持 HTTP 协议最新的版本和建议。
http://www.lemfix.com/topics/363
<dependencies>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5.7</version>
</dependency>
</dependencies>
请求必须由客户端发起(浏览器,jmeter,httpcline),必须创建一个客户端 execute(HttpUriRequest):多态方法,接受HttpUriRequest所有子实现
package com.zhongxin.demo;
import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import java.io.IOException;
import java.util.Arrays;
public class GetDemo {
public static void main(String[] args) throws IOException {
// 1+2+3
HttpGet get = new HttpGet("http://api.lemonban.com/futureloan/loans");
// 4
get.setHeader("X-Lemonban-Media-Type", "lemonban.v1");
// 6 请求必须由客户端发起(浏览器,jmeter,httpcline),必须创建一个客户端
HttpClient client = HttpClients.createDefault();
// execute(HttpUriRequest):多态方法,接受HttpUriRequest所有子实现
// 7
HttpResponse response = client.execute(get);
// 8
// 响应状态码
System.out.println(response.getStatusLine().getStatusCode());
// 响应头
Header[] allHeaders = response.getAllHeaders();
System.out.println(Arrays.toString(allHeaders));
// 响应体
HttpEntity entity = response.getEntity();
System.out.println(EntityUtils.toString(entity));
}
}
和get请求类似,不过需要增加请求体:
StringEntity body = new StringEntity("{'membet_id':2060127,'amount':1}", "utf-8");
post.setEntity(body);
package com.zhongxin.demo;
import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import java.io.IOException;
import java.util.Arrays;
public class PostDemo {
public static void main(String[] args) throws IOException {
// 1+2+3
HttpPost post = new HttpPost("http://api.lemonban.com/futureloan/member/recharge");
// 4
post.setHeader("X-Lemonban-Media-Type", "lemonban.v1");
post.setHeader("Content-Type", "application/json");
// 5
StringEntity body = new StringEntity("{\"member_id\":2060127,\"amount\":1}", "utf-8");
post.setEntity(body);
// 6 请求必须由客户端发起(浏览器,jmeter,httpcline),必须创建一个客户端
HttpClient client = HttpClients.createDefault();
// execute(HttpUriRequest):多态方法,接受HttpUriRequest所有子实现
// 7
HttpResponse response = client.execute(post);
// 8
// 响应状态码
System.out.println(response.getStatusLine().getStatusCode());
// 响应头
Header[] allHeaders = response.getAllHeaders();
System.out.println(Arrays.toString(allHeaders));
// 响应体
HttpEntity entity = response.getEntity();
System.out.println(EntityUtils.toString(entity));
}
}
package com.zhongxin.utils;
import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import java.io.IOException;
import java.util.Arrays;
public class HttpUtils {
/*
* 发送get请求
* @param url 接口地址
* @throws
* */
public static void get(String url) throws Exception {
HttpGet get = new HttpGet(url);
get.setHeader("X-Lemonban-Media-Type", "lemonban.v1");
HttpClient client = HttpClients.createDefault();
HttpResponse response = client.execute(get);
printResponse(response);
}
/*
* 发送一个post请求
* @param url 接口地址
* @param params 接口参数
* @throws
* */
public static void post(String url, String params) throws Exception {
HttpPost post = new HttpPost(url);
post.setHeader("X-Lemonban-Media-Type", "lemonban.v1");
post.setHeader("Content-Type", "application/json");
StringEntity body = new StringEntity(params, "utf-8");
post.setEntity(body);
HttpClient client = HttpClients.createDefault();
HttpResponse response = client.execute(post);
printResponse(response);
}
/**
* 打印响应
* @param response 响应对象
* @return
* @throws IOException
*/
private static String printResponse(HttpResponse response) throws IOException {
int statusCode = response.getStatusLine().getStatusCode();
System.out.println(statusCode);
Header[] allHeaders = response.getAllHeaders();
System.out.println(Arrays.toString(allHeaders));
HttpEntity entity = response.getEntity();
String body = EntityUtils.toString(entity);
System.out.println(body);
return body;
}
}
package com.zhongxin.utils;
public class Demo {
public static void main(String[] args) throws Exception {
HttpUtils.get("http://api.lemonban.com/futureloan/loans");
HttpUtils.get("http://api.lemonban.com/futureloan/loans?pageIndex=1");
HttpUtils.get("http://api.lemonban.com/futureloan/loans?pageIndex=1&pageSize=1");
HttpUtils.post("http://api.lemonban.com/futureloan/member/recharge", "{\"member_id\":2060127,\"amount\":1}");
HttpUtils.post("http://api.lemonban.com/futureloan/member/recharge", "{\"member_id\":2060127,\"amount\":2}");
HttpUtils.post("http://api.lemonban.com/futureloan/member/recharge", "{\"member_id\":2060127,\"amount\":-1}");
HttpUtils.post("http://api.lemonban.com/futureloan/member/recharge", "{\"member_id\":2060127,\"amount\":\"aaa\"}");
}
}