Java实现Http请求参数对特殊字符的处理办法
转载自：http://blog.csdn.net/hellochenlian/article/details/38512781
java中URL 的编码和解码函数
java.net.URLEncoder.encode(String s)和java.net.URLDecoder.decode(String s); 在javascript 中URL 的编码和解码函数
escape(String s)和unescape(String s) ;附上Java实例代码:
URLConnection版：
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.net.URLEncoder;
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=value1&name2=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 + "?" + URLEncoder.encode(param, "utf8");
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
Map> 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=value1&name2=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(URLEncoder.encode(param,"utf8"));
// 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;
}
public static void main(String[] args) {
//发送 GET 请求
String s=HttpRequest.sendGet("http://192.168.10.191:9000/CoreTrade/ajax/ajaxLoginMobileAction", "userNo=18107729226&password=2hXWD5JlN8FgdwaMN+7+Ug==");
System.out.println(s);
//发送POST 请求
String s2=HttpRequest.sendPost("http://192.168.10.191:9000/CoreTrade/ajax/ajaxLoginMobileAction", "userNo=18107729226&password=2hXWD5JlN8FgdwaMN+7+Ug==");
System.out.println(s2);
}
}
HttpClient版本，需要导入HttpClient包，下载地址: http://hc.apache.org/downloads.cgi ：
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import org.apache.http.Header;
import org.apache.http.HttpResponse;
import org.apache.http.ParseException;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
public class HttpClientDemo {
/**
* @param args
*/
public static void main(String[] args) {
HttpClient client = new DefaultHttpClient();
String paramUrl = "http://localhost:9000/CoreTrade/ajax/ajaxLoginMobileAction"+"?";
String params = "userNo=18107729226&password=";
HttpGet get = null;
try {
get = new HttpGet(paramUrl+URLEncoder.encode(params+"2hXWD5JlN8FgdwaMN+7+Ug==", "utf8"));
} catch (UnsupportedEncodingException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
}
HttpResponse res = null;
try {
res = client.execute(get);
} catch (ClientProtocolException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
System.out.println(res.getProtocolVersion());
System.out.println(res.getStatusLine().getStatusCode());
System.out.println(res.getStatusLine().getReasonPhrase());
System.out.println(res.getStatusLine().toString());
Header[] headers = res.getAllHeaders();
for (Header header : headers) {
System.out.println(header.getName() + ": " + header.getValue());
}
if (res.getEntity() != null) {
try {
System.out.println(EntityUtils.toString(res.getEntity()));
} catch (ParseException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
try {
EntityUtils.consume(res.getEntity());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
client.getConnectionManager().shutdown();
}
}