「javapost脚本」post java

admin 2023-03-20 02:58:10 462

本篇文章给大家谈谈javapost脚本，以及post java对应的知识点，希望对各位有所帮助，不要忘了收藏本站喔。

本文目录一览：

1、如何使用java模拟post请求
2、如何在java中发送post请求
3、java中怎样用post，get，put请求
4、java 怎样发送 POST
5、java 怎样响应post请求
6、java怎么模拟post提交？

如何使用java模拟post请求

你要导入httpclient的jar包，要是你请求参数格式是json的或者返回的是json格式数据，你还需要导入json包

/**

* post请求

* @param url url地址

* @param jsonParam 参数

* @param noNeedResponse 不需要返回结果

* @return

public static JSONObject httpPost(String url,JSONObject jsonParam, boolean noNeedResponse){

//post请求返回结果

DefaultHttpClient httpClient = new DefaultHttpClient();

JSONObject jsonResult = null;

HttpPost method = new HttpPost(url);

try {

if (null != jsonParam) {

//解决中文乱码问题

StringEntity entity = new StringEntity(jsonParam.toString(), "utf-8");

entity.setContentEncoding("UTF-8");

entity.setContentType("application/json");

method.setEntity(entity);

}

HttpResponse result = httpClient.execute(method);

url = URLDecoder.decode(url, "UTF-8");

/**请求发送成功，并得到响应**/

if (result.getStatusLine().getStatusCode() == 200) {

String str = "";

try {

/**读取服务器返回过来的json字符串数据**/

str = EntityUtils.toString(result.getEntity());

if (noNeedResponse) {

return null;

}

/**把json字符串转换成json对象**/

jsonResult = JSONObject.fromObject(str);

} catch (Exception e) {

logger.error("post请求提交失败:" + url, e);

}

} catch (IOException e) {

logger.error("post请求提交失败:" + url, e);

}

return jsonResult;

}

如何在java中发送post请求

package com.test;

import java.util.ArrayList;

import java.util.List;

import org.apache.http.HttpResponse;

import org.apache.http.NameValuePair;

import org.apache.http.client.HttpClient;

import org.apache.http.client.entity.UrlEncodedFormEntity;

import org.apache.http.client.methods.HttpPost;

import org.apache.http.impl.client.DefaultHttpClient;

import org.apache.http.message.BasicNameValuePair;

import org.apache.http.util.EntityUtils;

public class D {

public static void main(String[] args){

ListNameValuePair nvps= new ArrayListNameValuePair();

nvps.add(new BasicNameValuePair("id", "1"));

String url="";

HttpClient httpClient = null;

String response="";

try {

HttpPost post = new HttpPost(url);

post.setHeader("Connection", "close");

httpClient = new DefaultHttpClient();

post.setEntity(new UrlEncodedFormEntity(nvps));

HttpResponse httpres= httpClient.execute(post);

if (httpres.getStatusLine().getStatusCode() = 300) {

System.out.println("Request Failed,Code:" + httpres.getStatusLine().getStatusCode() + ",URL:" + url);

}

response = EntityUtils.toString(httpres.getEntity(), "utf-8");

}catch(Exception e){

e.printStackTrace();

}finally{

if(httpClient!=null){

httpClient.getConnectionManager().shutdown();

}

System.out.println(response);

}

需要httpclient-4.1.3.jar，httpcore-4.1.4.jar和commons-logging-1.1.1.jar

java中怎样用post，get，put请求

java中用post，get，put请求方法：

public static String javaHttpGet(String url,String charSet){

String resultData = null;

try {

URL pathUrl = new URL(url); //创建一个URL对象

HttpURLConnection urlConnect = (HttpURLConnection) pathUrl.openConnection(); //打开一个HttpURLConnection连接

urlConnect.setConnectTimeout(30000); // 设置连接超时时间

urlConnect.connect();

if (urlConnect.getResponseCode() == 200) { //请求成功

resultData = readInputStream(urlConnect.getInputStream(), charSet);

}

} catch (MalformedURLException e) {

LogL.getInstance().getLog().error("URL出错！", e);

} catch (IOException e) {

LogL.getInstance().getLog().error("读取数据流出错！", e);

}

return resultData;

}

public static String javaHttpPost(String url,MapString,Object map,String charSet){

String resultData=null;

StringBuffer params = new StringBuffer();

try {

IteratorEntryString, Object ir = map.entrySet().iterator();

while (ir.hasNext()) {

Map.EntryString, Object entry = (Map.EntryString, Object) ir.next();

params.append(URLEncoder.encode(entry.getKey(),charSet) + "=" + URLEncoder.encode(entry.getValue().toString(), charSet) + "");

}

byte[] postData = params.deleteCharAt(params.length()).toString().getBytes();

URL pathUrl = new URL(url); //创建一个URL对象

HttpURLConnection urlConnect = (HttpURLConnection) pathUrl.openConnection();

urlConnect.setConnectTimeout(30000); // 设置连接超时时间

urlConnect.setDoOutput(true); //post请求必须设置允许输出

urlConnect.setUseCaches(false); //post请求不能使用缓存

urlConnect.setRequestMethod("POST"); //设置post方式请求

urlConnect.setInstanceFollowRedirects(true);

urlConnect.setRequestProperty("Content-Type","application/x-www-form-urlencoded; charset="+charSet);// 配置请求Content-Type

urlConnect.connect(); // 开始连接

DataOutputStream dos = new DataOutputStream(urlConnect.getOutputStream()); // 发送请求参数

dos.write(postData);

dos.flush();

dos.close();

if (urlConnect.getResponseCode() == 200) { //请求成功

resultData = readInputStream(urlConnect.getInputStream(),charSet);

}

} catch (MalformedURLException e) {

LogL.getInstance().getLog().error("URL出错！", e);

} catch (IOException e) {

LogL.getInstance().getLog().error("读取数据流出错！", e);

} catch (Exception e) {

LogL.getInstance().getLog().error("POST出错！", e);

}

return resultData;

}

java 怎样发送 POST

private void postMethod(String url) throws IOException

{

url = "";

PostMethod postMethod = new PostMethod(url);

// 填入各个表单域的值

NameValuePair[] data = { new NameValuePair("id", "herrapfel"),new NameValuePair("passwd", "") };

// 将表单的值放入postMethod中

postMethod.setRequestBody(data);

// 执行postMethod

int statusCode = httpClient.executeMethod(postMethod);

System.out.println(" status code:" + statusCode);

// HttpClient对于要求接受后继服务的请求，象POST和PUT等不能自动处理转发

if(statusCode == HttpStatus.SC_OK)

{

StringBuffer contentBuffer = new StringBuffer();

InputStream in = postMethod.getResponseBodyAsStream();

BufferedReader reader = new BufferedReader(new InputStreamReader(in,postMethod.getResponseCharSet()));

String inputLine = null;

while((inputLine = reader.readLine()) != null)

{

contentBuffer.append(inputLine);

System.out.println("input line:"+ inputLine);

contentBuffer.append("/n");

}

in.close();

}

else if (statusCode == HttpStatus.SC_MOVED_PERMANENTLY || statusCode == HttpStatus.SC_MOVED_TEMPORARILY)

{

// 从头中取出转向的地址

Header locationHeader = postMethod.getResponseHeader("location");

String location = null;

if (locationHeader != null)

{

location = locationHeader.getValue();

System.out.println("The page was redirected to:" + location);

}

else

{

System.err.println("Location field value is null.");

}

java 怎样响应post请求

Http请求类

package wzh.Http;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.PrintWriter;

import java.net.URL;

import java.net.URLConnection;

import java.util.List;

import java.util.Map;

public class HttpRequest {

/**

* 向指定URL发送GET方法的请求

* @param url

* 发送请求的URL

* @param param

* 请求参数，请求参数应该是 name1=value1name2=value2 的形式。

* @return URL 所代表远程资源的响应结果

public static String sendGet(String url, String param) {

String result = "";

BufferedReader in = null;

try {

String urlNameString = url + "?" + param;

URL realUrl = new URL(urlNameString);

// 打开和URL之间的连接

URLConnection connection = realUrl.openConnection();

// 设置通用的请求属性

connection.setRequestProperty("accept", "*/*");

connection.setRequestProperty("connection", "Keep-Alive");

connection.setRequestProperty("user-agent",

"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");

// 建立实际的连接

connection.connect();

// 获取所有响应头字段

MapString, ListString map = connection.getHeaderFields();

// 遍历所有的响应头字段

for (String key : map.keySet()) {

System.out.println(key + "---" + map.get(key));

}

// 定义 BufferedReader输入流来读取URL的响应

in = new BufferedReader(new InputStreamReader(

connection.getInputStream()));

String line;

while ((line = in.readLine()) != null) {

result += line;

}

} catch (Exception e) {

System.out.println("发送GET请求出现异常！" + e);

e.printStackTrace();

}

// 使用finally块来关闭输入流

finally {

try {

if (in != null) {

in.close();

}

} catch (Exception e2) {

e2.printStackTrace();

}

return result;

}

/**

* 向指定 URL 发送POST方法的请求

* @param url

* 发送请求的 URL

* @param param

* 请求参数，请求参数应该是 name1=value1name2=value2 的形式。

* @return 所代表远程资源的响应结果

public static String sendPost(String url, String param) {

PrintWriter out = null;

BufferedReader in = null;

String result = "";

try {

URL realUrl = new URL(url);

// 打开和URL之间的连接

URLConnection conn = realUrl.openConnection();

// 设置通用的请求属性

conn.setRequestProperty("accept", "*/*");

conn.setRequestProperty("connection", "Keep-Alive");

conn.setRequestProperty("user-agent",

"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");

// 发送POST请求必须设置如下两行

conn.setDoOutput(true);

conn.setDoInput(true);

// 获取URLConnection对象对应的输出流

out = new PrintWriter(conn.getOutputStream());

// 发送请求参数

out.print(param);

// flush输出流的缓冲

out.flush();

// 定义BufferedReader输入流来读取URL的响应

in = new BufferedReader(

new InputStreamReader(conn.getInputStream()));

String line;

while ((line = in.readLine()) != null) {

result += line;

}

} catch (Exception e) {

System.out.println("发送 POST 请求出现异常！"+e);

e.printStackTrace();

}

//使用finally块来关闭输出流、输入流

finally{

try{

if(out!=null){

out.close();

}

if(in!=null){

in.close();

}

catch(IOException ex){

ex.printStackTrace();

}

return result;

}

调用方法：

public static void main(String[] args) {

//发送 GET 请求

String s=HttpRequest.sendGet("", "key=123v=456");

System.out.println(s);

//发送 POST 请求

String sr=HttpRequest.sendPost("", "key=123v=456");

System.out.println(sr);

}

java怎么模拟post提交？

String action = "xxxxxxxxxxx"；

URL url = new URL(action);

HttpURLConnection http = (HttpURLConnection) url.openConnection();

http.setRequestMethod("POST");

http.setConnectTimeout(0);

http.setInstanceFollowRedirects(true);

http.setRequestProperty("Content-Type",

"application/x-www-form-urlencoded");

http.setDefaultUseCaches(false);

http.setDoOutput(true);

String queryString = "";

PrintWriter out = new PrintWriter(http.getOutputStream());

out.print(queryString);//传入参数

out.close();

http.connect();//连接

InputStream in = httpURLConnection.getInputStream();//返回流

其他的自己来了吧

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