Java POST请求案例

public class Person {
private String name;
private Integer age; public String getName() {
return name;
} public void setName(String name) {
this.name = name;
} public Integer getAge() {
return age;
} public void setAge(Integer age) {
this.age = age;
}
}

public class PersonReq {
private String name;
private Integer age; public String getName() {
return name;
} public void setName(String name) {
this.name = name;
} public Integer getAge() {
return age;
} public void setAge(Integer age) {
this.age = age;
}
}

package com.demo;import org.springframework.stereotype.Service;import java.util.ArrayList;
import java.util.List;@Service
public class DemoService {
/**
* 获取列表
*
* @param personReq 对象参数
* @return
*/
public List<Person> personList(PersonReq personReq) {
List<Person> list = new ArrayList<>();
Person person = new Person();
person.setAge(personReq.getAge());
person.setName(personReq.getName());
Person person1 = new Person();
person1.setAge(20);
person1.setName("2诗");
list.add(person);
list.add(person1);
return list;
}
}

package com.demo;import com.alibaba.fastjson.JSON;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;import java.util.List;@RestController
@RequestMapping("/demo")
public class DemoController {
private final Logger logger = LoggerFactory.getLogger(this.getClass());
@Autowired
DemoService demo; @RequestMapping("/list")
public List<Person> getPerson(@RequestBody PersonReq personReq) {
List<Person> people = demo.personList(personReq);
logger.info("list:{}", JSON.toJSONString(people));
return people;
}
}

package com;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.scheduling.annotation.EnableScheduling;
import springfox.documentation.swagger2.annotations.EnableSwagger2;@EnableScheduling
@EnableSwagger2
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}

package com.demo;import com.alibaba.fastjson.JSONObject;import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;/**
* HTTP 工具类
*/
public class HttpClients {
/**
* 发送POST请求
*
* @param url 请求URL
* @param param 请求参数
* @return
*/
private String sendPost(String url, String param) { return null;
} public static String sendPost(String url, String request, String ContentType) {
String result = ""; try {
//存储请求
PrintWriter out; //存储接口返回的response
BufferedReader in; // 获取访问地址
//得到网络访问对象java.net.HttpURLConnection
URL realUrl = new URL(url); //设置请求参数，以流的形式连接
HttpURLConnection conn = (HttpURLConnection) realUrl.openConnection(); //设置http的请求头
conn.setRequestProperty("accept", "*/*"); //设置请求的Contenttype
if (ContentType == null || ContentType.equals("")) {
if (isJson(request)) {
conn.setRequestProperty("Content-Type", "application/json;charset=utf-8");
} else {
if (url.toLowerCase().contains(".asmx")) {
conn.setRequestProperty("Content-Type", "text/xml;charset=utf-8");
} else {
conn.setRequestProperty("Content-Type", "application/xml;charset=utf-8");
}
}
} else {
conn.setRequestProperty("Content-Type", ContentType);
} //特殊处理：如果是1.0的请求则进一步具体设定setRequestProperty，并对xml格式做优化
if (url.toLowerCase().contains(".asmx")) {
if (url.toLowerCase().contains("datacomparews")) {
conn.setRequestProperty("SOAPAction", "http://tempuri.org/DataTableCompare");
String Xml = "<?xml version=\"1.0\" encoding=\"utf-8\"?>" +
"<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">" +
"<soap:Body>";
Xml += request.replace("<?xml version=\"1.0\" encoding=\"UTF-8\"?>", "");
Xml += "</soap:Body></soap:Envelope>";
request = Xml;
} else {
String Xml = "<?xml version=\"1.0\" encoding=\"utf-8\"?>" +
"<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">" +
"<soap:Body><Request xmlns=\"http://tempuri.org/\"><requestXML>" + "<![CDATA[";
Xml += request.replace("<?xml version=\"1.0\" encoding=\"UTF-8\"?>", "");
Xml += "]]></requestXML></Request></soap:Body></soap:Envelope>";
request = Xml;
conn.setRequestProperty("SOAPAction", "http://tempuri.org/Request");
}
} //keep-alive 发出的请求建议服务器端保留连接，这样下次向同一个服务器发请求时可以走同一个连接
conn.setRequestProperty("connection", "Keep-Alive"); //设置请求的浏览器相关属性
conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)"); //设定接受的返回流字节码为UTF-8
conn.setRequestProperty("Accept-Charset", "utf-8");
conn.setRequestProperty("Charset", "utf-8"); //设置超时时间，如果未设置超时时间，但是访问超时了就会一直卡在这里
conn.setConnectTimeout(50000 * 12);
conn.setReadTimeout(50000 * 12); //设置是否向HttpURLConnection输出，默认为false,发送post请求的不啊必须设置为true
conn.setDoOutput(true); //设置是否从httpUrlConnection读入，默认为true，不设置也可以
conn.setDoInput(true); //处理输入请求 ,设置请求正文，即要提交的数据
out = new PrintWriter(new OutputStreamWriter(conn.getOutputStream(), "utf-8")); // 写入参数到请求中
out.print(request); //flush输出流的缓冲
out.flush(); //处理输出接口，远程对象变为可用
in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "utf-8")); String line;
while ((line = in.readLine()) != null) {
result += line;
}
} catch (Exception e) {
result = e.getMessage();
e.printStackTrace();
}
return result;
} /**
* 判断字符串是不是json格式
*
* @param request
* @return
*/
private static boolean isJson(String request) {
try {
JSONObject.parseObject(request);
return true;
} catch (Exception e) {
return false;
}
}
}

package com.demo;import com.alibaba.fastjson.JSON;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;@RestController
@RequestMapping("/demo1")
public class Demo1Controller {
private static final Logger logger = LoggerFactory.getLogger(Demo1Controller.class); @RequestMapping("/list")
public String getPerson1() {
PersonReq personReq = new PersonReq();
personReq.setAge(10);
personReq.setName("1诗");
String url = "http://localhost:8080/demo/list";
String result = HttpClients.sendPost(url, JSON.toJSONString(personReq), "");
logger.info(" getPerson1 list:{}", result);
return result;
}

//mian方法测试
public static void main(String[] args) {
PersonReq personReq = new PersonReq();
personReq.setAge(10);
personReq.setName("1诗");
String url = "http://localhost:8080/demo/list";
String result = HttpClients.sendPost(url, JSON.toJSONString(personReq), "");
logger.info("result:{}", result);
}
}