Java：SpringBoot获取所有接口的路由映射关系

重要：版本很重要，先说一下版本，版本不一样，可能获取结果也不一样

spring-boot 2.7.7
java 1.8

定义一个查看路由的数据结构

package com.example.demo.entity;

import lombok.Data;
import org.springframework.web.bind.annotation.RequestMethod;

import java.util.Set;

@Data
public class Route {
    /**
     * 类名
     */
    private String className;

    /**
     * 方法名
     */
    private String methodName;

    /**
     * 匹配规则
     */
    private Set<String> patterns;

    /**
     * 请求方式 GET/POST
     */
    private Set<RequestMethod> methods;

}

获取SpringBoot路由映射关系

package com.example.demo.config;

import com.example.demo.entity.Route;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.mvc.condition.PathPatternsRequestCondition;
import org.springframework.web.servlet.mvc.condition.RequestMethodsRequestCondition;
import org.springframework.web.servlet.mvc.method.RequestMappingInfo;
import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping;
import org.springframework.web.util.pattern.PathPattern;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;

/**
 * 获取SpringBoot路由映射关系
 */
@Component
public class RouteConfig {
    @Autowired
    private WebApplicationContext applicationContext;

    /**
     * 获取所有路由映射关系
     *
     * @return
     */
    public List<Route> getAllRouteMapping() {
        RequestMappingHandlerMapping mapping = applicationContext.getBean(RequestMappingHandlerMapping.class);

        // 获取url与类和方法的对应信息
        Map<RequestMappingInfo, HandlerMethod> map = mapping.getHandlerMethods();

        List<Route> list = new ArrayList<>();

        // 遍历
        for (Map.Entry<RequestMappingInfo, HandlerMethod> entry : map.entrySet()) {
            Route route = this.getRoute(entry);
            list.add(route);
        }

        return list;
    }

    /**
     * 获取路由对象
     *
     * @return
     */
    public Route getRoute(Map.Entry<RequestMappingInfo, HandlerMethod> entry) {
        Route route = new Route();

        RequestMappingInfo info = entry.getKey();

        // 请求路径
        PathPatternsRequestCondition requestCondition = info.getPathPatternsCondition();

        if (requestCondition != null) {
            Set<PathPattern> patterns = requestCondition.getPatterns();
            if (patterns != null) {
                route.setPatterns(patterns
                        .stream()
                        .map(PathPattern::getPatternString)
                        .collect(Collectors.toSet()));
            }
        }

        // 请求方法
        RequestMethodsRequestCondition methodsCondition = info.getMethodsCondition();
        if (methodsCondition != null) {
            route.setMethods(methodsCondition.getMethods());
        }

        HandlerMethod method = entry.getValue();
        // 类名
        route.setClassName(method.getMethod().getDeclaringClass().getName());
        // 方法名
        route.setMethodName(method.getMethod().getName());

        return route;
    }
}

通过控制器输出路由映射数据

package com.example.demo.controller;

import com.example.demo.config.RouteConfig;
import com.example.demo.entity.Route;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@RestController
@RequestMapping("/api")
public class AppIndexController {
    @Autowired
    private RouteConfig routeConfig;

    @GetMapping("/route")
    public List<Route> route() {
        return routeConfig.getAllRouteMapping();
    }
}

访问路径：http://localhost:8080/api/route

输出数据如下

[
    {
        "className": "org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController",
        "methodName": "errorHtml",
        "patterns": [
            "/error"
        ],
        "methods": []
    },
    {
        "className": "org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController",
        "methodName": "error",
        "patterns": [
            "/error"
        ],
        "methods": []
    },
    {
        "className": "com.example.demo.controller.AppIndexController",
        "methodName": "route",
        "patterns": [
            "/api/route"
        ],
        "methods": [
            "GET"
        ]
    }
]

完整代码: https://github.com/mouday/spring-boot-demo

参考

• SpringBoot获取所有接口的路由