feat: 新增按骑手用户id查询经纬度接口

GET /system/position/getRiderposition?riderId=xxx：免权限（@Anonymous+@Auth 仅登录校验），
getOne(qw,false) 兼容历史重复行；无定位记录时 data 为 null。

ruoyi-admin/src/main/java/com/ruoyi/app/user/RiderPositionController.java

@@ -104,6 +104,24 @@ public class RiderPositionController extends BaseController
         }
     }
 
+    /**
+     * 通过骑手用户id获取骑手经纬度
+     *
+     * @param token 登录令牌
+     * @param riderId 骑手用户id
+     * @return 骑手定位记录（含 latitude/longitude），骑手尚无定位记录时 data 为 null
+     */
+    @Anonymous
+    @Auth
+    @GetMapping("/getRiderposition")
+    public AjaxResult getRiderposition(@RequestHeader String token, @RequestParam Long riderId) {
+        QueryWrapper<RiderPosition> queryWrapper = new QueryWrapper<>();
+        queryWrapper.eq("rider_id", riderId);
+        // 一人一条：历史重复行取第一条，不抛 selectOne 多行异常
+        RiderPosition position = riderPositionService.getOne(queryWrapper, false);
+        return success(position);
+    }
+
     /**
      * 查询RiderPosition列表
      */

ruoyi-admin/src/test/java/com/ruoyi/app/user/RiderPositionControllerTest.java

@@ -1,12 +1,14 @@
 package com.ruoyi.app.user;
 
 import com.baomidou.mybatisplus.core.conditions.Wrapper;
+import com.ruoyi.common.annotation.Anonymous;
 import com.ruoyi.common.core.domain.AjaxResult;
 import com.ruoyi.common.utils.spring.SpringUtils;
 import com.ruoyi.system.domain.InfoUser;
 import com.ruoyi.system.domain.RiderPosition;
 import com.ruoyi.system.service.IInfoUserService;
 import com.ruoyi.system.service.IRiderPositionService;
+import com.ruoyi.system.utils.Auth;
 import com.ruoyi.system.utils.JwtUtil;
 import org.junit.jupiter.api.AfterAll;
 import org.junit.jupiter.api.BeforeAll;
@@ -17,11 +19,22 @@ import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
 import org.springframework.beans.factory.support.DefaultListableBeanFactory;
 import org.springframework.context.support.StaticMessageSource;
 import org.springframework.dao.DuplicateKeyException;
+import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.test.util.ReflectionTestUtils;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestHeader;
+import org.springframework.web.bind.annotation.RequestParam;
 
+import java.lang.reflect.Method;
+import java.lang.reflect.Parameter;
+import java.math.BigDecimal;
 import java.util.Locale;
 
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertSame;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyBoolean;
 import static org.mockito.ArgumentMatchers.eq;
@@ -127,4 +140,42 @@ class RiderPositionControllerTest {
         verify(riderPositionService, times(1)).saveOrUpdate(any(RiderPosition.class));
         verify(riderPositionService, never()).update(any(RiderPosition.class), any(Wrapper.class));
     }
+
+    @Test
+    void getRiderpositionReturnsPositionByRiderId() {
+        RiderPosition position = new RiderPosition();
+        position.setId(7L);
+        position.setRiderId(9L);
+        position.setLatitude(new BigDecimal("10.770"));
+        position.setLongitude(new BigDecimal("106.700"));
+        when(riderPositionService.getOne(any(Wrapper.class), eq(false))).thenReturn(position);
+
+        AjaxResult result = controller.getRiderposition(JwtUtil.token("9", "user"), 9L);
+
+        assertEquals(200, ((Number) result.get(AjaxResult.CODE_TAG)).intValue());
+        assertSame(position, result.get(AjaxResult.DATA_TAG));
+    }
+
+    @Test
+    void getRiderpositionWithoutRecordReturnsNullData() {
+        when(riderPositionService.getOne(any(Wrapper.class), eq(false))).thenReturn(null);
+
+        AjaxResult result = controller.getRiderposition(JwtUtil.token("9", "user"), 404L);
+
+        assertEquals(200, ((Number) result.get(AjaxResult.CODE_TAG)).intValue());
+        assertNull(result.get(AjaxResult.DATA_TAG));
+    }
+
+    @Test
+    void getRiderpositionDeclaresExplicitAnnotationsWithoutPermissionCheck() throws Exception {
+        Method method = RiderPositionController.class.getMethod("getRiderposition", String.class, Long.class);
+        assertArrayEquals(new String[]{"/getRiderposition"}, method.getAnnotation(GetMapping.class).value());
+        assertNotNull(method.getAnnotation(Anonymous.class));
+        assertNotNull(method.getAnnotation(Auth.class));
+        assertNull(method.getAnnotation(PreAuthorize.class));
+        Parameter[] parameters = method.getParameters();
+        assertNotNull(parameters[0].getAnnotation(RequestHeader.class));
+        RequestParam riderId = parameters[1].getAnnotation(RequestParam.class);
+        assertNotNull(riderId);
+    }
 }