add > simple api sign auth

src/main/java/com/company/project/configurer/WebMvcConfigurer.java

@@ -8,8 +8,11 @@ import com.alibaba.fastjson.support.spring.FastJsonpHttpMessageConverter4;
 import com.company.project.core.Result;
 import com.company.project.core.ResultCode;
 import com.company.project.core.ServiceException;
+import org.apache.commons.codec.digest.DigestUtils;
+import org.apache.commons.lang3.StringUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.http.converter.HttpMessageConverter;
 import org.springframework.web.method.HandlerMethod;
@@ -19,11 +22,14 @@ import org.springframework.web.servlet.NoHandlerFoundException;
 import org.springframework.web.servlet.config.annotation.CorsRegistry;
 import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
+import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
 
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import java.io.IOException;
 import java.nio.charset.Charset;
+import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 
 /**
@@ -33,6 +39,8 @@ import java.util.List;
 public class WebMvcConfigurer extends WebMvcConfigurerAdapter {
 
     private final Logger logger = LoggerFactory.getLogger(WebMvcConfigurer.class);
+    @Value("${spring.profiles.active}")
+    private String env;//当前激活的配置文件
 
     //使用阿里 FastJson 作为JSON MessageConverter
     @Override
@@ -48,7 +56,6 @@ public class WebMvcConfigurer extends WebMvcConfigurerAdapter {
     }
 
 
-
     //统一异常处理
     @Override
     public void configureHandlerExceptionResolvers(List<HandlerExceptionResolver> exceptionResolvers) {
@@ -85,15 +92,37 @@ public class WebMvcConfigurer extends WebMvcConfigurerAdapter {
         });
     }
 
+    //解决跨域问题
     @Override
-    public void addInterceptors(InterceptorRegistry registry) {
-        //添加拦截器
+    public void addCorsMappings(CorsRegistry registry) {
+        //registry.addMapping("/**");
     }
 
+    //添加拦截器
     @Override
-    public void addCorsMappings(CorsRegistry registry) {
-        //解决跨域问题
-        //registry.addMapping("/**");
+    public void addInterceptors(InterceptorRegistry registry) {
+        //接口签名认证拦截器，该签名认证比较简单，实际项目中建议使用Json Web Token代替。
+        if (!StringUtils.contains(env, "dev")) { //开发环境忽略签名认证
+            registry.addInterceptor(new HandlerInterceptorAdapter() {
+
+                @Override
+                public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
+                    String sign = request.getParameter("sign");
+                    //验证签名
+                    if (StringUtils.isNotEmpty(sign) && validateSign(request, sign)) {
+                        return true;
+                    } else {
+                        logger.warn("签名认证失败，请求接口：{}，请求IP：{}，请求参数：{}",
+                                request.getRequestURI(), getIpAddress(request), JSON.toJSONString(request.getParameterMap()));
+
+                        Result result = new Result();
+                        result.setCode(ResultCode.UNAUTHORIZED).setMessage("签名认证失败");
+                        responseResult(response, result);
+                        return false;
+                    }
+                }
+            });
+        }
     }
 
     private void responseResult(HttpServletResponse response, Result result) {
@@ -106,4 +135,58 @@ public class WebMvcConfigurer extends WebMvcConfigurerAdapter {
             logger.error(ex.getMessage());
         }
     }
+
+    /**
+     * 一个简单的签名认证，规则：请求参数按ASCII码排序后，拼接为a=value&b=value...这样的字符串后进行MD5
+     *
+     * @param request
+     * @param requestSign
+     * @return
+     */
+    private boolean validateSign(HttpServletRequest request, String requestSign) {
+        List<String> keys = new ArrayList<String>(request.getParameterMap().keySet());
+        Collections.sort(keys);
+
+        String linkString = "";
+
+        for (String key : keys) {
+            if (!"sign".equals(key)) {
+                linkString += key + "=" + request.getParameter(key) + "&";
+            }
+        }
+        if (StringUtils.isEmpty(linkString))
+            return false;
+
+        linkString = linkString.substring(0, linkString.length() - 1);
+        String key = "Potato";//自己修改
+        String sign = DigestUtils.md5Hex(linkString + key);
+
+        return StringUtils.equals(sign, requestSign);
+
+    }
+
+    private String getIpAddress(HttpServletRequest request) {
+        String ip = request.getHeader("x-forwarded-for");
+        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
+            ip = request.getHeader("Proxy-Client-IP");
+        }
+        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
+            ip = request.getHeader("WL-Proxy-Client-IP");
+        }
+        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
+            ip = request.getHeader("HTTP_CLIENT_IP");
+        }
+        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
+            ip = request.getHeader("HTTP_X_FORWARDED_FOR");
+        }
+        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
+            ip = request.getRemoteAddr();
+        }
+        // 如果是多级代理，那么取第一个ip为客户ip
+        if (ip != null && ip.indexOf(",") != -1) {
+            ip = ip.substring(0, ip.indexOf(",")).trim();
+        }
+
+        return ip;
+    }
 }