增加验证token的拦截器

guns-rest/src/main/java/com/stylefeng/guns/rest/config/WebConfig.java

+package com.stylefeng.guns.rest.config;
+
+import com.stylefeng.guns.rest.filter.JwtAuthenticationTokenFilter;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+/**
+ * web配置
+ *
+ * @author fengshuonan
+ * @date 2017-08-23 15:48
+ */
+@Configuration
+public class WebConfig {
+
+    @Bean
+    public JwtAuthenticationTokenFilter jwtAuthenticationTokenFilter() {
+        return new JwtAuthenticationTokenFilter();
+    }
+}

guns-rest/src/main/java/com/stylefeng/guns/rest/controller/NormalController.java

+package com.stylefeng.guns.rest.controller;
+
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+/**
+ * 常规控制器
+ *
+ * @author fengshuonan
+ * @date 2017-08-23 16:02
+ */
+@Controller
+@RequestMapping("/hello")
+public class NormalController {
+
+    @RequestMapping("")
+    public ResponseEntity hello() {
+        return ResponseEntity.ok("请求成功!");
+    }
+}

guns-rest/src/main/java/com/stylefeng/guns/rest/filter/JwtAuthenticationTokenFilter.java

+package com.stylefeng.guns.rest.filter;
+
+import com.stylefeng.guns.rest.auth.JwtTokenUtil;
+import com.stylefeng.guns.rest.config.properties.JwtProperties;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.filter.OncePerRequestFilter;
+
+import javax.servlet.FilterChain;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+
+public class JwtAuthenticationTokenFilter extends OncePerRequestFilter {
+
+    private final Log logger = LogFactory.getLog(this.getClass());
+
+    @Autowired
+    private JwtTokenUtil jwtTokenUtil;
+
+    @Autowired
+    private JwtProperties jwtProperties;
+
+    @Override
+    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain) throws ServletException, IOException {
+
+        if (request.getServletPath().equals("/" + jwtProperties.getAuthPath())) {
+            chain.doFilter(request, response);
+            return;
+        }
+
+        final String requestHeader = request.getHeader(jwtProperties.getHeader());
+
+        String username = null;
+        String authToken = null;
+        if (requestHeader != null && requestHeader.startsWith("Bearer ")) {
+            authToken = requestHeader.substring(7);
+            try {
+                username = jwtTokenUtil.getUsernameFromToken(authToken);
+            } catch (IllegalArgumentException e) {
+                logger.error("an error occured during getting username from token", e);
+                return;
+            }
+        } else {
+            logger.warn("couldn't find bearer string, will ignore the header");
+            return;
+        }
+        chain.doFilter(request, response);
+    }
+}
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