getInputStream,返回是一個輸入流對象,讀取的是時候需一行一行去讀,但是這個獲取內容,如果表單數據有中文,很容易發生編碼的問題。
1.ServletDemo4.java內容
package com.anthony.servlet;
import java.beans.IntrospectionException;
import java.beans.PropertyDescriptor;
import java.io.IOException;
import java.lang.reflect.Method;
import java.util.Enumeration;
import java.util.Map;
import java.util.Map.Entry;
import javax.servlet.ServletException;
import javax.servlet.ServletInputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.anthony.entity.User;
public class ServletDemo4 extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
req.setCharacterEncoding("UTF-8"); // 通過字節流方法獲取表單數據
ServletInputStream sis = req.getInputStream();
int len = 0;
byte[] b = new byte[1024];
while ((len = sis.read(b)) != -1) {
System.out.println(new String(b, "UTF-8"));
}
sis.close();
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
doGet(req, resp);
}
}
然而輸出的全是亂碼。。
userName=Anthony&pwd=13433454&gender=%E7%94%B7&hobby=%E7%AF%AE%E7%90%83&hobby=%E5%94%B1%E6%AD%8C&hobby=%E7%BC%96%E7%A0%81&city=gz
2.解決亂碼
網上找了很多辦法,什麼StringBuilder都不行,原因就是請求頭中 Accept-Encoding的值爲gzip格式,中文就是無法解析。這個問題先放這裏,以後找到答案再來更新。