//主要代码
list ls = memberMap.get（Rz.Roles__c）; String JSONString = JSON.serialize（ls）;
//调试代码
[{＆＃34;属性＆＃34; {＆＃34;类型＆＃34;：＆＃34; Work_Team_Member__c＆＃34;＆＃34; URL＆＃34;：＆＃34; /服务/数据/v42.0/sobjects/Work_Team_Member__c/a81W00000008gIsIAI"},"Id":"a81W00000008gIsIAI","Member_Employee_ID__c":"63" ，＆＃34; Member_Name__c＆＃34;：＆＃34; Test1＆＃34;，＆＃34; Member_Role__c＆＃34;：＆＃34;客户代表 - 一般（中学）＆＃34;，＆＃34; Work_Team_Master__c＆＃ 34;：＆＃34; a80W00000009DodIAE＆＃34;}]