try {?? ??? ??? ??? ??? ??? ??? ?//根據(jù)imComuserGroupMng獲取這個數(shù)據(jù)庫的所有ImComuserGroup數(shù)據(jù)
?? ??? ??? ??? ??? ??? ?List<ImComuserGroup> list = imComuserGroupMng.findAllComuserGroup();
?? ??? ??? ??? ??? ??? ?//便利實體數(shù)據(jù)list為數(shù)據(jù)的集合
?? ??? ??? ??? ??? ??? ?for (ImComuserGroup imComuserGroup : list) {
?? ??? ??? ??? ??? ??? ?//獲取實體的用戶ID其中ID是用分隔符|分割
?? ??? ??? ??? ??? ??? ??? ?String comUserId = imComuserGroup.getComUserId();
?? ??? ??? ??? ??? ??? ??? ?//轉(zhuǎn)化integer類型數(shù)據(jù)為字符串

?? ??? ??? ??? ??? ??? ??? ?String userId = ImCompactApply.getAuthUser().getUserId().toString();
?? ??? ??? ??? ??? ??? ??? ?//如果包含用戶的ID就進行字符串拆分的得到集合split
?? ??? ??? ??? ??? ??? ??? ?if(comUserId.contains(userId)){
?? ??? ??? ??? ??? ??? ??? ??? ?String[] split = comUserId.split("\\|");
?? ??? ??? ??? ??? ??? ??? ??? ?String replace = "";
?? ??? ??? ??? ??? ??? ??? ??? ?//判斷集合長度
?? ??? ??? ??? ??? ??? ??? ??? ?if(split.length>1){
?? ??? ??? ??? ??? ??? ??? ??? ?判斷集合是否為要刪除的用戶的ID開始例如：1|2|3要刪除1加|
?? ??? ??? ??? ??? ??? ??? ??? ??? ?if(comUserId.startsWith(userId+"|")){
?? ??? ??? ??? ??? ??? ??? ??? ??? ??? ?replace = comUserId.replace(userId+"|", "");
?? ??? ??? ??? ??? ??? ??? ??? ??? ??? ?imComuserGroup.setComUserId(replace);
?? ??? ??? ??? ??? ??? ??? ??? ??? ??? ?imComuserGroupMng.update(imComuserGroup);
?? ??? ??? ??? ??? ??? ??? ??? ??? ??? ?集合是否為要刪除的用戶的ID結(jié)束例如：3|2|1要刪除|加1
?? ??? ??? ??? ??? ??? ??? ??? ??? ?}if(comUserId.endsWith("|"+userId)){
?? ??? ??? ??? ??? ??? ??? ??? ??? ??? ?replace = comUserId.replace("|"+userId, "");
?? ??? ??? ??? ??? ??? ??? ??? ??? ??? ?imComuserGroup.setComUserId(replace);
?? ??? ??? ??? ??? ??? ??? ??? ??? ??? ?imComuserGroupMng.update(imComuserGroup);
?? ??? ??? ??? ??? ??? ??? ??? ??? ?}else{
?? ??? ??? ??? ??? ??? ??? ??? ??? ??? ?判斷集合是否為中間如2|1|3刪除1
?? ??? ??? ??? ??? ??? ??? ??? ??? ??? ?replace = comUserId.replace(userId+"|", "");
?? ??? ??? ??? ??? ??? ??? ??? ??? ??? ?imComuserGroup.setComUserId(replace);
?? ??? ??? ??? ??? ??? ??? ??? ??? ??? ?imComuserGroupMng.update(imComuserGroup);?? ?
?? ??? ??? ??? ??? ??? ??? ??? ??? ?}
?? ??? ??? ??? ??? ??? ??? ??? ?}else{
?? ??? ??? ??? ??? ??? ??? ??? ??? ?判斷集合要刪除的數(shù)據(jù)是長度為1直接刪除整個實體
?? ??? ??? ??? ??? ??? ??? ??? ??? ?replace = comUserId.replace(userId, "");
?? ??? ??? ??? ??? ??? ??? ??? ??? ?imComuserGroup.setComUserId(replace);
?? ??? ??? ??? ??? ??? ??? ??? ??? ?imComuserGroupMng.deleteById(imComuserGroup.getId());
?? ??? ??? ??? ??? ??? ??? ??? ?}
?? ??? ??? ??? ??? ??? ??? ??? ?
?? ??? ??? ??? ??? ??? ??? ?}
?? ??? ??? ??? ??? ??? ?}
?? ??? ??? ??? ??? ?} catch (Exception e) {
?? ??? ??? ??? ??? ??? ?
?? ??? ??? ??? ?}

轉(zhuǎn)載于:https://www.cnblogs.com/gongzh/p/8594916.html

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