乱码主要是编码不统一形成的。html
在Tomcat8.0中已经为咱们解决了在get请求时候传入中文乱码的问题,故咱们须要解决一下post请求中文参数乱码的问题。ide
直接上Demopost
@WebServlet("/register") public class RegisterServlet extends HttpServlet { @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { //设置请求的编码为utf-8便可 req.setCharacterEncoding("utf-8"); String username=req.getParameter("username"); String password=req.getParameter("password"); //设置返回格式 resp.setContentType("text/html;charset=utf-8"); resp.getWriter().println("注册成功!"+"<br>"); resp.getWriter().println("username:"+username+"<br>"); resp.getWriter().println("password:"+password); } }