Fix shenyu mcp bugs (#6227)

* fix:shenyu-examples-mcp

* fix some bug

* fix: fix the mcp client and mcp examples bug

Author: 478320

shenyu-client/shenyu-client-mcp/shenyu-client-mcp-register/src/main/java/org/apache/shenyu/client/mcp/McpServiceEventListener.java

@@ -270,7 +270,8 @@ private List<String> findMergeUrl(final Class<?> clazz, final Method method) {
         for (String cp : classPaths) {
             for (String mp : methodPaths) {
                 String path = concatPaths(cp, mp);
-                combinedPaths.add(path);
+                String finalPath = concatPaths(getContextPath(), path);
+                combinedPaths.add(finalPath);
             }
         }
         return combinedPaths;

shenyu-examples/shenyu-examples-mcp/src/main/java/org/apache/shenyu/controller/OrderController.java

@@ -59,7 +59,7 @@ public class OrderController {
     @GetMapping("/findById")
     @ShenyuMcpTool(
             operation = @Operation(
-                    method = "Get", description = "find order by id"
+                    method = "GET", description = "find order by id"
             ),
             requestConfig = @ShenyuMcpRequestConfig(
                     bodyToJson = "false",
@@ -96,7 +96,7 @@ public OrderDTO findById(@ShenyuMcpToolParam(
     @GetMapping("/findAll")
     @ShenyuMcpTool(
             operation = @Operation(
-                    method = "Get", description = "find all order"
+                    method = "GET", description = "find all order"
             ),
             requestConfig = @ShenyuMcpRequestConfig(
                     bodyToJson = "false",

shenyu-examples/shenyu-examples-mcp/src/main/resources/application.yml

@@ -18,7 +18,8 @@ server:
   address: 0.0.0.0
   tomcat:
     max-http-form-post-size: 100MB
-
+  servlet:
+    context-path: /mcp
 shenyu:
   namespace: 649330b6-c2d7-4edc-be8e-8a54df9eb385
   register:
@@ -31,9 +32,9 @@ shenyu:
   client:
     mcp:
       props:
-        contextPath: /order
-        appName: /order
+        contextPath: /mcp
+        appName: mcp
     http:
       props:
-        contextPath: /order
-        appName: order
+        contextPath: /mcp
+        appName: mcp

shenyu-plugin/shenyu-plugin-mcp-server/src/main/java/org/apache/shenyu/plugin/mcp/server/manager/ShenyuMcpServerManager.java

@@ -288,7 +288,7 @@ private String extractBasePath(final String uri) {
 
         // For sub-paths, extract the main MCP server path
         String[] pathSegments = basePath.split("/");
-        if (pathSegments.length > 2) {
+        if (pathSegments.length >= 2) {
             // Keep only the first two segments (empty + server-name)
             basePath = "/" + pathSegments[1];
         }