Question

有没有办法在嵌入式tomcat中设置响应编码？到目前为止，我只能找到设置URI编码。但我需要设置响应编码。

令人惊讶的是，独立的tomcat默认以UTF-8发送数据。

Answer 1

您可以创建过滤器来设置响应编码

import java.io.IOException;  
import java.io.PrintWriter;  

import javax.servlet.*;  

public class MyFilter implements Filter{  

public void init(FilterConfig arg0) throws ServletException {}  

public void doFilter(ServletRequest req, ServletResponse resp,  
    FilterChain chain) throws IOException, ServletException {  

    resp.setCharacterEncoding("text/plain; charset=UTF-8"); 

    chain.doFilter(req, resp);//sends request to next resource  


    }  
public void destroy() {}  
}

Answer 2

创建过滤器：

`package charsetFilter.classes;

 import java.io.IOException;
 import javax.servlet.Filter;
 import javax.servlet.FilterChain;
 import javax.servlet.FilterConfig;
 import javax.servlet.ServletException;
 import javax.servlet.ServletRequest;
 import javax.servlet.ServletResponse;

public class CharsetFilter implements Filter{
    private String encoding;

    public void init(FilterConfig config) throws ServletException{
            encoding = config.getInitParameter("requestEncoding");
            if( encoding==null ) encoding="UTF-8";
    }

    public void doFilter(ServletRequest request, ServletResponse response, FilterChain       next)
    throws IOException, ServletException{
        // Respect the client-specified character encoding
        // (see HTTP specification section 3.4.1)
            if(null == request.getCharacterEncoding())
            request.setCharacterEncoding(encoding);
            /**
        * Set the default response content type and encoding
        */
        response.setContentType("text/html; charset=UTF-8");
        response.setCharacterEncoding("UTF-8");
            next.doFilter(request, response);
    }

        public void destroy(){}
}`

在web.xml中添加此过滤器为：

`<filter>
        <filter-name>CharsetFilter</filter-name>
        <filter-class>charsetFilter.classes.CharsetFilter</filter-class>
            <init-param>
                <param-name>requestEncoding</param-name>
                <param-value>UTF-8</param-value>
            </init-param>
</filter>

<filter-mapping>
        <filter-name>CharsetFilter</filter-name>
        <url-pattern>/*</url-pattern>
</filter-mapping>`

HTML-meta标签应该写在所有HTML文件中：
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="fi"> <head> <meta http-equiv='Content-Type' content='text/html; charset=UTF-8' />
将您的servlet设置为：
request.setCharacterEncoding("UTF-8"); response.setContentType("text/html; charset=UTF-8"); response.setCharacterEncoding("UTF-8");
处理servlet请求为：
String input = new String(request.getParameter("foo").getBytes("iso-8859-1"), "utf-8"); String input = URLDecoder.decode(request.getParameter("keyWord"), "UTF-8");

如果您仍有问题，请告诉我

在嵌入式tomcat中设置响应编码

2 个答案: