Question

我想在同一个HTML表单中包含DELETE方法，调用相同的操作（调用REST服务）。我该怎么做呢？。我当前的HTML表单如下所示：DELETE功能不起作用，但POST确实如此。我也包含了REST资源服务。任何建议都表示赞赏。

  <!DOCTYPE html>
<html>
 <head>
  <title>Form to create a new resource</title>
  <style>
    tab { padding-left: 4em; }
    </style>
 </head>
<body>

 <form id= "myForm" action="../com.dcr.jersey.first/rest/todos" >

  <label for="id">ID</label>
  <input name="id" />
  <br/>
  <label for="summary">Summary</label>
  <input name="summary" />
  <br/>
  Description:
  <TEXTAREA NAME="description" COLS=40 ROWS=6></TEXTAREA>
  <br/> 
  <button type="submit" value="Submit">Submit</button>  <tab> <button type="submit" value="Delete">Delete</button>
  <script>
      $("button.Submit").click(function(){
            $("#myForm").attr("method", "POST");
        });

        $("button.delete").click(function(){
            $("#myForm").attr("method", "DELETE");
        });
  </script>

</form>

</body>
</html>

TodosResource.java

package com.dcr.jersey.jaxb.resources;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.http.HttpServletResponse;
import javax.ws.rs.Consumes;
import javax.ws.rs.DELETE;
import javax.ws.rs.FormParam;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Request;
import javax.ws.rs.core.UriInfo;

import com.dcr.jersey.jaxb.dao.TodoDao;
import com.dcr.jersey.jaxb.model.Todo;
//Will map the resource to the URL todos
@Path("/todos")
public class TodosResource {

    // Allows to insert contextual objects into the class,
      // e.g. ServletContext, Request, Response, UriInfo
      @Context
      UriInfo uriInfo;
      @Context
      Request request;
      @Context
      Todo todo;
    // Return the list of todos to the user in the browser
      @GET
      @Produces(MediaType.TEXT_XML)
      public List<Todo> getTodosBrowser() {
        List<Todo> todos = new ArrayList<Todo>();
        todos.addAll(TodoDao.instance.getModel().values());
        return todos;
      }
    // Return the list of todos for applications
      @GET
      @Produces({ MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON })
      public List<Todo> getTodos() {
        List<Todo> todos = new ArrayList<Todo>();
        todos.addAll(TodoDao.instance.getModel().values());
        return todos;
      }
    // retuns the number of todos
      // Use http://localhost:8080/de.vogella.jersey.todo/rest/todos/count
      // to get the total number of records
      @GET
      @Path("count")
      @Produces(MediaType.TEXT_PLAIN)
      public String getCount() {
        int count = TodoDao.instance.getModel().size();
        return String.valueOf(count);
      }

      @POST
      @Produces(MediaType.TEXT_HTML)
      @Consumes(MediaType.APPLICATION_FORM_URLENCODED)
      public void newTodo(@FormParam("id") String id,
          @FormParam("summary") String summary,
          @FormParam("description") String description,
          @Context HttpServletResponse servletResponse) throws IOException {
        Todo todo = new Todo(id, summary);
        if (description != null) {
          todo.setDescription(description);
        }
        TodoDao.instance.getModel().put(id, todo);
        servletResponse.sendRedirect("../Created_PopUp.html");
      }  

      @POST
      @Produces(MediaType.TEXT_HTML)
      @Consumes({MediaType.APPLICATION_XML,MediaType.APPLICATION_JSON})

      public void newTodoXMLJSON(Todo todo) throws IOException {
        this.todo=todo;
        TodoDao.instance.getModel().put(todo.getId(), todo);
      }  

      @DELETE
      @Produces(MediaType.TEXT_HTML)
      @Consumes(MediaType.APPLICATION_FORM_URLENCODED)
      public void delTodo(@FormParam("id") String id,
          @Context HttpServletResponse servletResponse) throws IOException {
          Todo c = TodoDao.instance.getModel().remove(id);
            if(c==null)
              throw new RuntimeException("Delete: Todo with " + id +  " not found");
            else servletResponse.sendRedirect("../create_todo.html");
      }  

      @Path("{todo}")
      public TodoResource getTodo(@PathParam("todo") String id) {
            return new TodoResource(uriInfo, request, id);
      }
}

Answer 1

您只能在表单上使用一种方法（属性是唯一的）。

解决方法是根据您按下的按钮更改表单方法。

JQ Ex：

// input arguments
const cv::Mat_<math::flt> intrinsic  = getIntrinsic();
const cv::Mat_<math::flt> distortion = getDistortion();
const cv::Mat mNewCameraMatrix = cv::getOptimalNewCameraMatrix(intrinsic, distortion, myImageSize, 0);

// output arguments
cv::Mat undistortMapX;
cv::Mat undistortMapY;

// computes undistortion maps
cv::initUndistortRectifyMap(intrinsic, distortion, cv::Mat(),
                            newCameraMatrix, myImageSize, CV_16SC2,
                            undistortMapX, undistortMapY);

// computes undistortion maps
// ...computation of mapX and mapY omitted
cv::convertMaps(mapX, mapY, skewMapX, skewMapY, CV_16SC2);

for(;;) {
    cv::Mat originalImage = getNewImage();

    cv::Mat undistortedImage;
    cv::remap(originalImage, undistortedImage, undistortMapX, undistortMapY, cv::INTER_LINEAR);

    cv::Mat skewedImage;
    cv::remap(undistortedImage, skewedImage, skewMapX, skewMapY, cv::INTER_LINEAR);

    outputImage(skewedImage);
}

另请查看PHP_EOL以获取有关浏览器支持的信息。

如何在REST服务调用中为相同的“操作”包含HTML表单方法= DELETE

1 个答案: