如何通过UTF-8编码的ServletOutputStream字符发送

My servlet code looks like that:

我的servlet代码看起来像这样：

response.setContentType("text/html; charset=UTF-8");
response.setCharacterEncoding("UTF-8");
ServletOutputStream out = response.getOutputStream();
out.println(...MY-UTF-8 CODE...);

...

then I get the error:

然后我得到错误：

java.io.CharConversionException: Not an ISO 8859-1 character: ש
 javax.servlet.ServletOutputStream.print(ServletOutputStream.java:89)
 javax.servlet.ServletOutputStream.println(ServletOutputStream.java:242)
 rtm.servlets.CampaignLogicServlet.doPost(CampaignLogicServlet.java:68)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

How can I switch the charset of Servlet's outputstream ???

如何切换Servlet的输出流的字符集???

4 个解决方案

#1

I think you want to use getWriter() instead. That will accept a string and encode it, whereas the output stream is for handling binary data.

我想你想要使用getWriter（）。这将接受一个字符串并对其进行编码，而输出流则用于处理二进制数据。

From the doc:

从文档：

Returns a PrintWriter object that can send character text to the client. The character encoding used is the one specified in the charset= property of the setContentType(java.lang.String) method, which must be called before calling this method for the charset to take effect.

返回可以将字符文本发送到客户端的PrintWriter对象。使用的字符编码是setContentType（java.lang.String）方法的charset =属性中指定的字符编码，必须在调用此方法之前调用该方法才能使字符集生效。

Either this method or getOutputStream() may be called to write the body, not both.

可以调用此方法或getOutputStream（）来编写正文，而不是两者。

Here's the change of the code:

这是代码的变化：

response.setContentType("text/html; charset=UTF-8");
response.setCharacterEncoding("UTF-8");
PrintWriter out = response.getWriter();
out.println(...MY-UTF-8 CODE...);

#2

This also works:

这也有效：

ServletOutputStream out = response.getOutputStream();
out.write("MY-UTF-8 CODE".getBytes("UTF-8"));

#3

The same case happen to me before and i tried to add-on one line on top of the PrintWriter and it is work.

同样的情况发生在我之前，我试图在PrintWriter上添加一行，这是工作。

response.setContentType("text/html; charset=GBK");
PrintWriter out = response.getWriter();

response.setContentType（“text / html; charset = GBK”）; PrintWriter out = response.getWriter（）;

#4

public void output(String jsonStr, HttpServletResponse response) throws IOException {
    response.setContentType("text/html;charset=UTF-8;");
    response.setCharacterEncoding("UTF-8");
    ServletOutputStream out = response.getOutputStream();
    out.write(jsonStr.getBytes("UTF-8"));
    out.flush();
    out.close();
}

#1