用java中的过滤器写两个filter,一个响应,一个请求,来处理字符乱码问题
时间: 2023-05-17 14:02:59 浏览: 85
好的,我可以回答这个问题。以下是示例代码:
请求过滤器:
```java
import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
public class RequestFilter implements Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {
// 初始化方法
}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
HttpServletRequest httpRequest = (HttpServletRequest) request;
httpRequest.setCharacterEncoding("UTF-8");
chain.doFilter(request, response);
}
@Override
public void destroy() {
// 销毁方法
}
}
```
响应过滤器:
```java
import javax.servlet.*;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
public class ResponseFilter implements Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {
// 初始化方法
}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
HttpServletResponse httpResponse = (HttpServletResponse) response;
httpResponse.setCharacterEncoding("UTF-8");
chain.doFilter(request, response);
}
@Override
public void destroy() {
// 销毁方法
}
}
```
这两个过滤器分别处理请求和响应中的字符编码,将其设置为 UTF-8,以解决字符乱码问题。
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