POST请求的Java Servlet返回错误405(不允许使用方法)
我的服务可以很好地处理get请求,但是当我调用POST(使用jquery ajax $ .post)时,出现错误405(不允许使用方法)
这是我的代码:
import java.io.*;import javax.servlet.*;
import javax.servlet.http.*;
public class init extends HttpServlet {
public init() { }
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/plain");
PrintWriter out = response.getWriter();
out.println("GET");
}
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException, IllegalStateException {
response.setContentType("application/json");
ServletInputStream in = request.getInputStream();
PrintWriter out = response.getWriter();
out.print("POST");
}
}
回答:
您确定确实覆盖了doPost方法吗?
签名如下所示:
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, java.io.IOException
但您可以这样指定:
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException, IllegalStateException
请尝试以下步骤:
- 添加@Override注释
- 删除抛出的IllegalStateException(这不是问题,因为它是运行时异常)
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