package com.ajun.utils;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.regex.Pattern;
/**
* Http操作辅助工具
* @author ajun
*
*/
public class HttpTool {
/**
* GET请求数据
* @param get_url url地址
* @param content key=value形式
* @return 返回结果
* @throws Exception
*/
public String sendGetData(String get_url, String content) throws Exception {
String result = "";
URL getUrl = null;
BufferedReader reader = null;
String lines = "";
HttpURLConnection connection = null;
try {
if (content != null && !content.equals(""))
get_url = get_url + "?" + content;
//get_url = get_url + "?" + URLEncoder.encode(content, "utf-8");
getUrl = new URL(get_url);
connection = (HttpURLConnection) getUrl.openConnection();
connection.connect();
// 取得输入流，并使用Reader读取
reader = new BufferedReader(new InputStreamReader(connection
.getInputStream(), "utf-8"));// 设置编码
while ((lines = reader.readLine()) != null) {
result = result + lines;
}
return result;
} catch (Exception e) {
throw e;
} finally {
if (reader != null) {
reader.close();
reader = null;
}
connection.disconnect();
}
}
/**
* @param POST_URL url地址
* @param content key=value形式
* @return 返回结果
* @throws Exception
*/
public String sendPostData(String POST_URL, String content)
throws Exception {
HttpURLConnection connection=null;
DataOutputStream out=null;
BufferedReader reader=null;
String line = "";
String result="";
try {
URL postUrl = new URL(POST_URL);
connection= (HttpURLConnection) postUrl.openConnection();
connection.setDoOutput(true);
connection.setDoInput(true);
connection.setRequestMethod("POST");
// Post 请求不能使用缓存
connection.setUseCaches(false);
connection.setInstanceFollowRedirects(true);
connection.setRequestProperty("Content-Type",
"application/x-www-form-urlencoded");
connection.connect();
out = new DataOutputStream(connection.getOutputStream());
//content = URLEncoder.encode(content, "utf-8");
// DataOutputStream.writeBytes将字符串中的16位的unicode字符�?8位的字符形式写道流里�?
out.writeBytes(content);
out.flush();
out.close();
//获取结果
reader = new BufferedReader(new InputStreamReader(
connection.getInputStream(), "utf-8"));// 设置编码
while ((line = reader.readLine()) != null) {
result=result+line;
}
return result;
} catch (Exception e) {
throw e;
}finally
{
if(out!=null)
{
out.close();
out=null;
}
if(reader!=null)
{
reader.close();
reader=null;
}
connection.disconnect();
}
}
/*
* 过滤掉html里不安全的标签，不允许用户输入这些标�?
*/
public static String htmlFilter(String inputString) {
//return inputString;
String htmlStr = inputString; // 含html标签的字符串
String textStr = "";
java.util.regex.Pattern p_script;
java.util.regex.Matcher m_script;
try {
String regEx_script = "<[\\s]*?(script|style)[^>]*?>[\\s\\S]*?<[\\s]*?\\/[\\s]*?(script|style)[\\s]*?>";
String regEx_onevent="on[^\\s]+=\\s*";
String regEx_hrefjs="href=javascript:";
String regEx_iframe="<[\\s]*?(iframe|frameset)[^>]*?>[\\s\\S]*?<[\\s]*?\\/[\\s]*?(iframe|frameset)[\\s]*?>";
String regEx_link="<[\\s]*?link[^>]*?/>";
htmlStr = Pattern.compile(regEx_script, Pattern.CASE_INSENSITIVE).matcher(htmlStr).replaceAll("");
htmlStr=Pattern.compile(regEx_onevent, Pattern.CASE_INSENSITIVE).matcher(htmlStr).replaceAll("");
htmlStr=Pattern.compile(regEx_hrefjs, Pattern.CASE_INSENSITIVE).matcher(htmlStr).replaceAll("");
htmlStr=Pattern.compile(regEx_iframe, Pattern.CASE_INSENSITIVE).matcher(htmlStr).replaceAll("");
htmlStr=Pattern.compile(regEx_link, Pattern.CASE_INSENSITIVE).matcher(htmlStr).replaceAll("");
//p_html = Pattern.compile(regEx_html, Pattern.CASE_INSENSITIVE);
// m_html = p_html.matcher(htmlStr);
// htmlStr = m_html.replaceAll(""); // 过滤html标签
textStr = htmlStr;
} catch (Exception e) {
System.err.println("Html2Text: " + e.getMessage());
}
return textStr;
}
}