页面编码为UTF-8的项目中servlet中文显示乱码的解决方法

servlet中文显示乱码:
1、servlet中输出中文字符
2、servlet接收表单传值并显示,表单字段含中文。

servlet中文显示乱码:

第一种情况:servlet中输出中文字符,如:

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

  response.setContentType("text/html");
  PrintWriter out = response.getWriter();
  out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
  out.println("<HTML>");
  out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>");
  out.println("  <BODY>");
  out.print(" 中国网页设计http://www.125jz.com-最权威的网页设计教程站 ");
  out.println("  </BODY>");
  out.println("</HTML>");
  out.flush();
  out.close();
 }

运行显示:??????http://www.125jz.com-???????????

解决方法:
把response.setContentType(“text/html”);改为response.setContentType(“text/html;charset=UTF-8”);

第二种情况:servlet接收表单传值并显示,表单字段含中文。

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

 response.setContentType(“text/html;charset=UTF-8”);
request.setCharacterEncoding(“UTF-8”);

PrintWriter out = response.getWriter();
out.println(“<!DOCTYPE HTML PUBLIC \”-//W3C//DTD HTML 4.01 Transitional//EN\”>”);
out.println(“<HTML>”);
out.println(”  <HEAD><TITLE>A Servlet</TITLE></HEAD>”);
out.println(”  <BODY>”);
String name=request.getParameter(“name”);//接收表单传递的参数值,含中文。
out.println(“hello “+name);
out.println(”  </BODY>”);
out.println(“</HTML>”);
out.flush();
out.close();
}

解决方法:在servlet程序中加上以下代码就可以了:
response.setContentType(“text/html;charset=UTF-8”);
request.setCharacterEncoding(“UTF-8”);

如果页面编码是gb2312只需将以上代码中的UTF-8换成gb2312即可。

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