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				@@ -108,11 +108,14 @@ public class TeacherManageController extends BaseController { 
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				     @ApiOperation(value = "根据群编号,获取群组基本信息") 
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				     @GetMapping("/course/findGroupById") 
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				-    public Object findGroupById(Integer groupId){ 
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				-        if(null == groupId){ 
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				+    public Object findGroupById(String imGroupId){ 
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				+        if(null == imGroupId){ 
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				             return failed("参数校验错误"); 
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				         } 
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				-        return succeed(classGroupService.findGroupById(groupId)); 
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				+        if (imGroupId.contains("S") || imGroupId.contains("I")){ 
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				+            imGroupId = imGroupId.substring(1); 
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				+        } 
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				+        return succeed(classGroupService.findGroupById(Integer.parseInt(imGroupId))); 
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				     } 
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				     @ApiOperation(value = "根据群编号,获取群组所有成员基本信息") 
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