如果使用get请求, 是不会乱码的, 而post有可能乱码, 可以使用filter设置统一编码
先 new 一个 class , 名称叫 EncodingFilter , 并拷贝如下代码
import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
/**
* 解决全站乱码问题,处理所有的请求
*/
@WebFilter("/*")
public class EncodingFilter implements Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
@Override
public void doFilter(ServletRequest req, ServletResponse rep, FilterChain filterChain) throws IOException, ServletException {
//将父接口转为子接口
HttpServletRequest request = (HttpServletRequest) req;
HttpServletResponse response = (HttpServletResponse) rep;
//获取请求方法
String method = request.getMethod();
//解决post请求中文数据乱码问题, get不会乱码
if(method.equalsIgnoreCase("post")){
request.setCharacterEncoding("utf-8");
}
//处理响应乱码, 仅设置响编码,而不是 setContentType
response.setCharacterEncoding("utf-8");
filterChain.doFilter(request,response);
}
@Override
public void destroy() {
}
}