servlet和action中获取URL中的汉字(解决URL中汉字为乱码的问题)

最近在项目中又遇到一个小问题，通过HttpURLConnection来传递汉字时，服务端获取汉字参数时都为乱码，以下分别为在servlet或action中获取URL中的汉字解决办法：

1. 以下代码为 通过HttpURLConnection连接来传递参数，其中，对待汉字的操作需要先进行编码的操作，之后在服务端进行解码操作即可。

[java]
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public
static void main(String[] args)
throws UnsupportedEncodingException {

// String url = "http://61.154.14.46:8080/exter.shtml?serviceType=1011";

String name = java.net.URLEncoder.encode("行子爱上大叔的","UTF-8");

String url = "http://localhost:8081/exter.shtml?serviceType=1023&guid=11&mobile=13696900475&content=123" + name;

// String url = "http://localhost:8080/webtest/servlet/URLTest?name=这个是测试用的" + name;

// String url = "http://localhost:8081/exter.shtml?serviceType=1022&menuId=4481&mobile=15806092760&text_data=linlinlin&imgName=testa.jpg";

// getReturnData1(url);
sendPost(url,null);

}

public static void main(String[] args) throws UnsupportedEncodingException {

//		String url = "http://61.154.14.46:8080/exter.shtml?serviceType=1011";
String name = java.net.URLEncoder.encode("行子爱上大叔的","UTF-8");
String url = "http://localhost:8081/exter.shtml?serviceType=1023&guid=11&mobile=13696900475&content=123" + name;
//		String url = "http://localhost:8080/webtest/servlet/URLTest?name=这个是测试用的" + name;
//		String url = "http://localhost:8081/exter.shtml?serviceType=1022&menuId=4481&mobile=15806092760&text_data=linlinlin&imgName=testa.jpg";
//		getReturnData1(url);
sendPost(url,null);
}

[java]
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/**
* 通过HTTP协议以POST形式发送指定文件至指定url
* @param url
* @throws IOException
*/
public static
void sendPost(String url,InputStream in) {

HttpURLConnection conn = null;

OutputStreamWriter osw = null;

try {
File file = new File("D:/test2.jpg");

if(!file.exists()) {
try {
file.createNewFile();
} catch (IOException e) {

e.printStackTrace();
}
}
URL url1 = new URL(url);

conn = (HttpURLConnection)url1.openConnection();
conn.setReadTimeout(10000);
// 缓存的最长时间
conn.setDoInput(true);// 允许输入

conn.setDoOutput(true);// 允许输出

conn.setUseCaches(false);
// 不允许使用缓存
conn.setRequestMethod("POST");

conn.setRequestProperty("Charsert",
"UTF-8");
//conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + java.util.UUID.randomUUID().toString());

//需要传递流时，一定要添加的参数，而且ACTION中通过request.getInputStream获取流的情况下，也必须添加该参数

conn.setRequestProperty("content-type",
"text/html");
OutputStream o = conn.getOutputStream();
BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));

int BUFFER_SIZE = 1024;

byte[] buf =
new byte[BUFFER_SIZE];

int size = 0;

try {
while ((size = bis.read(buf)) != -1)

o.write(buf, 0, size);

} catch (IOException e) {

e.printStackTrace();
}
finally {

try {
bis.close();
o.close();
} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();
}
}

if (conn.getResponseCode() != HttpURLConnection.HTTP_OK)

System.out.println( "connect failed!");

} catch (IOException e) {

e.printStackTrace();
}
finally
{
if (osw != null)

try {
osw.close() ;
} catch (IOException e1) {

e1.printStackTrace();
}

if (conn !=
null)
conn.disconnect() ;
}
}

/**
* 通过HTTP协议以POST形式发送指定文件至指定url
* @param url
* @throws IOException
*/
public static void sendPost(String url,InputStream in) {

HttpURLConnection conn = null;
OutputStreamWriter osw = null;
try {
File file = new File("D:/test2.jpg");
if(!file.exists()) {
try {
file.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
}
URL url1 = new URL(url);
conn = (HttpURLConnection)url1.openConnection();
conn.setReadTimeout(10000); // 缓存的最长时间
conn.setDoInput(true);// 允许输入
conn.setDoOutput(true);// 允许输出
conn.setUseCaches(false); // 不允许使用缓存
conn.setRequestMethod("POST");
conn.setRequestProperty("Charsert", "UTF-8");
//conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + java.util.UUID.randomUUID().toString());
//需要传递流时，一定要添加的参数，而且ACTION中通过request.getInputStream获取流的情况下，也必须添加该参数
conn.setRequestProperty("content-type", "text/html");
OutputStream o = conn.getOutputStream();
BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));
int BUFFER_SIZE = 1024;
byte[] buf = new byte[BUFFER_SIZE];
int size = 0;
try {
while ((size = bis.read(buf)) != -1)
o.write(buf, 0, size);
} catch (IOException e) {
e.printStackTrace();
}
finally {
try {
bis.close();
o.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

if (conn.getResponseCode() != HttpURLConnection.HTTP_OK)
System.out.println( "connect failed!");
} catch (IOException e) {
e.printStackTrace();
}
finally
{
if (osw != null)
try {
osw.close() ;
} catch (IOException e1) {
e1.printStackTrace();
}

if (conn != null)
conn.disconnect() ;
}
}

2. servlet端的解析汉字操作： 直接进行编码的转换即可显示为汉字

[java]
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public
void doPost(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

// response.setContentType("text/html");

request.setCharacterEncoding("UTF-8");

String s = request.getParameter("name");

System.out.println("s22 is " +
new String(s.getBytes("iso-8859-1"),"UTF-8"));

// InputStream in = request.getInputStream();

// if(in != null) {
// System.out.println("流不是空的。");

// this.writeInputStreamToFile(in);

// System.out.println("server time is " + new Date());

// } else {
// System.out.println("流是空的。");

// }

public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

//		response.setContentType("text/html");
request.setCharacterEncoding("UTF-8");
String s = request.getParameter("name");
System.out.println("s22 is " + new String(s.getBytes("iso-8859-1"),"UTF-8"));

//		InputStream in = request.getInputStream();
//		if(in != null) {
//			System.out.println("流不是空的。");
//			this.writeInputStreamToFile(in);
//			 System.out.println("server time is " + new Date());
//		} else {
//			System.out.println("流是空的。");
//		}

3. 在action中解析汉字的操作： 在action中直接设置下编码格式，直接获取就可。

request.setCharacterEncoding("utf-8");

System.out.println(form.getContent());