diff --git a/renren-admin/src/main/java/io/renren/modules/activiti/service/ActModelService.java b/renren-admin/src/main/java/io/renren/modules/activiti/service/ActModelService.java
index db654be6..0cd8dd97 100644
--- a/renren-admin/src/main/java/io/renren/modules/activiti/service/ActModelService.java
+++ b/renren-admin/src/main/java/io/renren/modules/activiti/service/ActModelService.java
@@ -172,7 +172,7 @@ public class ActModelService {
                 BufferedImage bufferedImage = ImageIO.read(in);
                 ImageIO.write(bufferedImage, "png", response.getOutputStream());
             } else {
-                response.getWriter().println("No image Info!");
+                response.getOutputStream().println("No image Info!");
             }
         } catch (IOException e) {
             e.printStackTrace();
diff --git a/renren-admin/src/main/java/io/renren/modules/security/oauth2/Oauth2Filter.java b/renren-admin/src/main/java/io/renren/modules/security/oauth2/Oauth2Filter.java
index 5df2d53c..c86e340b 100644
--- a/renren-admin/src/main/java/io/renren/modules/security/oauth2/Oauth2Filter.java
+++ b/renren-admin/src/main/java/io/renren/modules/security/oauth2/Oauth2Filter.java
@@ -22,7 +22,6 @@ import org.apache.shiro.web.filter.authc.AuthenticatingFilter;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Scope;
 import org.springframework.stereotype.Component;
-import org.springframework.web.bind.annotation.RequestMethod;
 
 import javax.servlet.ServletRequest;
 import javax.servlet.ServletResponse;
@@ -30,20 +29,16 @@ import javax.servlet.http.Cookie;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import java.io.IOException;
-import java.io.UnsupportedEncodingException;
 import java.lang.reflect.Field;
-import java.net.URL;
 import java.net.URLEncoder;
-import java.util.Iterator;
 import java.util.Map;
 
 /**
  * oauth2过滤器
- *
  */
 @Component()
 @Scope("prototype")
-public class  Oauth2Filter extends AuthenticatingFilter {
+public class Oauth2Filter extends AuthenticatingFilter {
 
     @Autowired
     private YaweiSSOProperties yaweiSSOProperties;
@@ -59,7 +54,7 @@ public class  Oauth2Filter extends AuthenticatingFilter {
         //获取请求token
         String token = getRequestToken((HttpServletRequest) request);
 
-        if(StringUtils.isBlank(token)){
+        if (StringUtils.isBlank(token)) {
             return null;
         }
 
@@ -86,26 +81,26 @@ public class  Oauth2Filter extends AuthenticatingFilter {
     protected boolean onAccessDenied(ServletRequest request, ServletResponse response) throws Exception {
 
         boolean yaweiHandle = yaweiHandle((HttpServletRequest) request, (HttpServletResponse) response);
-        if (yaweiHandle){
+        if (yaweiHandle) {
             //处理成功肯定从cookie或写cookie拿到了认证信息
             //亚威认证通过，为自己添加上token
             TicketManager tm = new TicketManager();
             String currentUser = null;
             if (tm.LoadTicket((HttpServletRequest) request)) {
                 currentUser = tm.getUserID();
-            }else {
+            } else {
                 currentUser = getYaweiUserIdCookieInResponse((HttpServletResponse) response);
                 currentUser = tm.DecData(currentUser);
             }
 
-            if (currentUser != null ) {
+            if (currentUser != null) {
                 LambdaQueryWrapper<SysUserEntity> queryWrapper = new QueryWrapper<SysUserEntity>().lambda()
                         .eq(SysUserEntity::getUsername, currentUser);
                 SysUserEntity sysUserEntity = sysUserDao.selectOne(queryWrapper);
                 if (sysUserEntity != null) {
                     String currentToken = getRequestToken((HttpServletRequest) request);
-                    HttpServletResponse httpresponse = (HttpServletResponse)response;
-                    if (StringUtils.isBlank(currentToken)){
+                    HttpServletResponse httpresponse = (HttpServletResponse) response;
+                    if (StringUtils.isBlank(currentToken)) {
                         Result<Map> result = sysUserTokenService.createToken(sysUserEntity.getId());
                         Object token = result.getData().get(Constant.TOKEN_HEADER);
                         currentToken = (String) token;
@@ -120,7 +115,7 @@ public class  Oauth2Filter extends AuthenticatingFilter {
 //                    return executeLogin(request, response);
                     boolean success = executeLogin(request, response);
                     return success;
-                }else {
+                } else {
                     send401Error((HttpServletResponse) response, "未找到用户");
                     return false;
                 }
@@ -133,7 +128,7 @@ public class  Oauth2Filter extends AuthenticatingFilter {
         return false;
     }
 
-    private String getYaweiUserIdCookieInResponse(HttpServletResponse response){
+    private String getYaweiUserIdCookieInResponse(HttpServletResponse response) {
         String userIdKey = "UserID=";
         for (String header : response.getHeaders("set-cookie")) {
             if (header.startsWith(userIdKey)) return header.substring(userIdKey.length());
@@ -161,7 +156,7 @@ public class  Oauth2Filter extends AuthenticatingFilter {
         Result r = new Result().error(HttpStatus.SC_UNAUTHORIZED, msg);
 
         String json = new Gson().toJson(r);
-        response.getWriter().print(json);
+        response.getOutputStream().print(json);
     }
 
     public boolean login(HttpServletRequest request, HttpServletResponse response) throws Exception {
@@ -171,23 +166,23 @@ public class  Oauth2Filter extends AuthenticatingFilter {
     /**
      * 获取请求的token
      */
-    private String getRequestToken(HttpServletRequest httpRequest){
+    private String getRequestToken(HttpServletRequest httpRequest) {
         //从header中获取token
         String token = httpRequest.getHeader(Constant.TOKEN_HEADER);
 
-        if(StringUtils.isBlank(token)){
+        if (StringUtils.isBlank(token)) {
             token = (String) httpRequest.getAttribute(Constant.TOKEN_HEADER);
         }
 
         //如果header中不存在token，则从参数中获取token
-        if(StringUtils.isBlank(token)){
+        if (StringUtils.isBlank(token)) {
             token = httpRequest.getParameter(Constant.TOKEN_HEADER);
         }
 
 
-        if(StringUtils.isBlank(token)){
+        if (StringUtils.isBlank(token)) {
             Cookie[] cookies = httpRequest.getCookies();
-            if (cookies != null){
+            if (cookies != null) {
                 for (Cookie cookie : cookies) {
                     if (Constant.TOKEN_HEADER.equalsIgnoreCase(cookie.getName())) {
                         token = cookie.getValue();
@@ -204,7 +199,7 @@ public class  Oauth2Filter extends AuthenticatingFilter {
     private boolean yaweiHandle(HttpServletRequest request, HttpServletResponse response) throws Exception {
         // 获取当前请求的url
         String requestUri = request.getHeader("REQUESTURI");
-        if (requestUri == null){
+        if (requestUri == null) {
             requestUri = request.getRequestURI();
         }
 
@@ -242,7 +237,7 @@ public class  Oauth2Filter extends AuthenticatingFilter {
 
     private void redirectToYaweiLogin(HttpServletRequest request, HttpServletResponse response) throws IOException, IllegalAccessException, NoSuchFieldException {
         String requestUri = request.getHeader("REQUESTURI");
-        if (requestUri == null){
+        if (requestUri == null) {
             requestUri = request.getRequestURI();
         }
         PSORequest psoRequest = new PSORequest(request);
@@ -257,7 +252,7 @@ public class  Oauth2Filter extends AuthenticatingFilter {
                 + URLEncoder.encode(requeststr, "UTF-8");
         response.addHeader("REDIRECT", keeperUrl);
         response.setStatus(HttpStatus.SC_UNAUTHORIZED);
-        response.getWriter().write(HttpStatus.SC_UNAUTHORIZED);
+        response.getOutputStream().write(HttpStatus.SC_UNAUTHORIZED);
     }