用于多个路径占位符的 Java API URL 模式

Question

我想将两个占位符值传递给 API，例如位置 id 的详细信息：组织的 50 是 5

api.xxx.com/organization/5/location/50

下面是我的代码，它给出了 404。但是如果您只是为了组织而编写代码，那么该代码就可以工作。

如何让它与两个占位符一起使用？

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/organization/*/location/*")
public class LocationServlet extends HttpServlet {
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        String[] pathInfo = request.getPathInfo().split("/");
        if (pathInfo.length == 4) {
            String organizationId = pathInfo[2];
            String locationId = pathInfo[4];
            // Implement your logic here to fetch data based on organizationId and locationId
            // You can return the results as JSON or any other format.
            // For example:
            // LocationInfo locationInfo = locationService.getLocationInfo(organizationId, locationId);
            // response.getWriter().write(locationInfo.toString());
            
            response.getWriter().write("Organization ID: " + organizationId + ", Location ID: " + locationId);
        } else {
            response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
            response.getWriter().write("Invalid URL");
        }
    }
}

Answer 1

问题在于您尝试访问路径参数的方式。 Java 中的数组是 0 索引的，因此当您分割路径时，您应该使用正确的索引访问值。

我将更改以下内容

1. organizationId 的 pathInfo[2] 到 pathInfo[1]。路径信息[4]到
2. locationId 的路径信息[3]。

您可以尝试修改此代码来解决该问题吗？

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/organization/*/location/*")
public class LocationServlet extends HttpServlet {
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        String[] pathInfo = request.getPathInfo().split("/");
        if (pathInfo.length == 4) {
            String organizationId = pathInfo[1];
            String locationId = pathInfo[3];
            // Implement your logic here to fetch data based on organizationId and locationId
            // You can return the results as JSON or any other format.
            // For example:
            // LocationInfo locationInfo = locationService.getLocationInfo(organizationId, locationId);
            // response.getWriter().write(locationInfo.toString());
            
            response.getWriter().write("Organization ID: " + organizationId + ", Location ID: " + locationId);
        } else {
            response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
            response.getWriter().write("Invalid URL");
        }
    }
}