異常或者error code匯總：https://developer.salesforce.com/docs/atlas.en-us.api.meta/api/sforce_api_calls_concepts_core_data_objects.htm

做項(xiàng)目的時(shí)候有很多異常是我們經(jīng)常遇到的：

　　1.空指針異常；

　　2.死鎖或者超時(shí)；

　　3.級(jí)聯(lián)刪除時(shí)無(wú)級(jí)聯(lián)表操作權(quán)限導(dǎo)致刪除失敗；

　　4.一次請(qǐng)求查詢超過(guò)50000條數(shù)據(jù)；

　　5.查詢時(shí)偏移量超過(guò)2000；

　　6.不滿足Validation Rule條件；

　　7.必填字段為空；

　　8.unique字段記錄添加重復(fù)。

上述問(wèn)題很多可以封裝公共方法來(lái)捕獲異常并且返回友好的提示信息，免得將異常直接拋出，導(dǎo)致用戶一頭霧水。

?此篇針對(duì)常見(jiàn)異常進(jìn)行最基本的封裝，方便后期項(xiàng)目有類似需求可以直接使用。

?ErrorHelper:此類封裝的getUserFriendlyMessage方法用于當(dāng)程序操作出現(xiàn)異常時(shí)，可以返回友好的錯(cuò)誤提示信息，第一個(gè)參數(shù)是errormessage，即error.getMessage(),第二個(gè)參數(shù)為sObject的API Name。

1 global with sharing class ErrorHelper { 2 private static final String NULL_POINTER_EXCEPTION = '空指針錯(cuò)誤'; 3 private static final String RECORD_ALREADY_INPROCESS = '記錄已經(jīng)被鎖定'; 4 private static final String RECORD_OVER_LIMIT = '查詢最多只能50000條，請(qǐng)輸入搜索條件重新搜索'; 5 private static final String RECORD_OFFSET_OVER_LIMIT = '數(shù)據(jù)最多只能查詢當(dāng)前檢索條件前2000條，請(qǐng)更改檢索條件重試'; 6 private static final String RECORD_ALREADY_IN_PROCESS = '當(dāng)前記錄已經(jīng)在流程中，如有問(wèn)題，請(qǐng)與管理員聯(lián)系'; 7 public static String getUserFriendlyMessage(String msg,String sObjectName) { 8 String errorMessage; 9 //空指針錯(cuò)誤：System.NullPointerException: Attempt to de-reference a null object 10 if(msg.contains('NullPointerException')){ 11 errorMessage = NULL_POINTER_EXCEPTION; 12 } 13 //死鎖或者超時(shí) 14 else if(msg.contains('UNABLE_TO_LOCK')){ 15 errorMessage = RECORD_ALREADY_INPROCESS; 16 } 17 //級(jí)聯(lián)刪除，沒(méi)有當(dāng)前表或者關(guān)聯(lián)表權(quán)限導(dǎo)致的錯(cuò)誤 18 else if(msg.contains('DELETE_REQUIRED_ON_CASCADE')) { 19 20 } 21 //查詢50001 22 else if(msg.contains('Too many query rows')) { 23 errorMessage = RECORD_OVER_LIMIT; 24 } 25 //offset 超過(guò)2000 26 else if(msg.contains('Maximum SOQL offset allowed is 2000')) { 27 errorMessage = RECORD_OFFSET_OVER_LIMIT; 28 } 29 //當(dāng)前記錄已經(jīng)在審批流中 30 else if(msg.contains('ALREADY_IN_PROCESS')) { 31 errorMessage = RECORD_ALREADY_IN_PROCESS; 32 } 33 //Validation Rule失敗 34 //eg: Update failed. First exception on row 0 with id a052800000BvtqEAAR; first error: FIELD_CUSTOM_VALIDATION_EXCEPTION, 商品價(jià)格不能為空且必須大于0.: [GoodsPrice__c] 35 else if (msg.contains('FIELD_CUSTOM_VALIDATION_EXCEPTION')){ 36 errorMessage = getUserFriendlyMessage4ValidationException(msg,sObjectName); 37 } 38 //必填字段 39 //eg:Insert failed. First exception on row 0; first error: REQUIRED_FIELD_MISSING, Required fields are missing: [Company_Name__c]: [Company_Name__c] 40 else if(msg.contains('REQUIRED_FIELD_MISSING')){ 41 errorMessage = getUserFriendlyMessage4RequiredField(msg,sObjectName); 42 } 43 //對(duì)于unique的字段進(jìn)行相同值插入會(huì)報(bào)此種錯(cuò)誤:System.DmlException: Insert failed. First exception on row 0; first error: DUPLICATE_VALUE, duplicate value found: Company_Code_Unique__c duplicates value on record with id: a032800000KOlEr: [] 44 45 else if(msg.contains('DUPLICATE_VALUE')) { 46 errorMessage = getUserFriendlyMessage4DuplicateValue(msg,sObjectName); 47 } 48 return errorMessage; 49 } 50 51 /** 52 *針對(duì)unique字段添加重復(fù)值的異常獲取友好的message 53 *@param msg : 異常信息 eg : System.DmlException: Insert failed. First exception on row 0; first error: DUPLICATE_VALUE, duplicate value found: Company_Code_Unique__c duplicates value on record with id: a032800000KOlEr: [] 54 *@param sObjectName : sObject的API Name 55 *@return 56 */ 57 private static String getUserFriendlyMessage4DuplicateValue(String msg,String sObjectName) { 58 String errorMessage = msg; 59 Integer pointer; 60 String fieldName; 61 if(!msg.contains('DUPLICATE_VALUE')) { 62 return errorMessage; 63 } 64 pointer = errorMessage.indexOf('DUPLICATE_VALUE') + 16; 65 if(pointer > -1) { 66 errorMessage = errorMessage.mid(pointer, errorMessage.length()); 67 } 68 pointer = errorMessage.indexOf('duplicates'); 69 if(pointer > -1) { 70 errorMessage = errorMessage.mid(0,pointer); 71 } 72 pointer = errorMessage.indexOf(':') + 1; 73 if(pointer > -1) { 74 fieldName = errorMessage.mid(pointer,errorMessage.length()).trim(); 75 Schema.DescribeFieldResult fieldResult = getSObjectFieldDescribeResult(sObjectName,fieldName); 76 if(fieldResult != null) { 77 fieldName = fieldResult.getLabel(); 78 } 79 } 80 errorMessage = errorMessage.mid(0,pointer) + fieldName; 81 return errorMessage; 82 } 83 84 /** 85 *針對(duì)Validation Rule的異常獲取友好的message 86 *@param msg : 異常消息 eg: Update failed. First exception on row 0 with id a052800000BvtqEAAR; first error: FIELD_CUSTOM_VALIDATION_EXCEPTION, 商品價(jià)格不能為空且必須大于0.: [GoodsPrice__c] 87 *@param sObjectName : sObject的API Name 88 *@return 返回有問(wèn)題的field labe + : + error message (eg : GoodsPrice : 商品價(jià)格不能為空且必須大于0.) 89 */ 90 private static String getUserFriendlyMessage4ValidationException(String msg,String sObjectName){ 91 String errorMessage = msg; 92 Integer pointer; 93 String fieldName; 94 if (msg.contains('FIELD_CUSTOM_VALIDATION_EXCEPTION')){ 95 pointer = errorMessage.indexOf('FIELD_CUSTOM_VALIDATION_EXCEPTION,') + 34; 96 errorMessage = errorMessage.mid(pointer, errorMessage.length()); 97 } else { 98 return msg; 99 } 100 pointer = errorMessage.indexOf('\n'); 101 if(pointer > -1){ 102 errorMessage = errorMessage.mid(0, pointer); 103 } 104 pointer = errorMessage.indexOf(':'); 105 if(pointer > -1){ 106 //去除error message中的 [] 107 fieldName = errorMessage.mid(pointer + 1,errorMessage.length()-1).remove('[').remove(']').trim(); 108 errorMessage = errorMessage.mid(0, pointer); 109 } 110 if(fieldName != null) { 111 Schema.DescribeFieldResult fieldDescribeResult = getSObjectFieldDescribeResult(sObjectName,fieldName); 112 if(fieldDescribeResult != null) { 113 errorMessage = fieldDescribeResult.getLabel() + ' : ' + errorMessage; 114 } 115 } 116 return errorMessage; 117 } 118 119 120 /** 121 * 針對(duì)必填字段獲取友好的message 122 * @param msg : 異常消息 eg: Insert failed. First exception on row 0; first error: REQUIRED_FIELD_MISSING, Required fields are missing: [Company_Name__c]: [Company_Name__c] 123 * @param sObjectName : sObject的API Name 124 * @return : 友好消息 eg : Required fields are missing: Company Name (field label name) 125 */ 126 private static String getUserFriendlyMessage4RequiredField(String msg,String sObjectName){ 127 String errorMessage = msg; 128 if(!errorMessage.contains('first error:')) { 129 return errorMessage; 130 } 131 Integer pointer; 132 String fieldName; 133 //獲取first error 以后的message信息 134 pointer = errorMessage.indexOf('first error:') + 12; 135 errorMessage = errorMessage.mid(pointer, errorMessage.length()); 136 if(pointer > -1){ 137 pointer = errorMessage.indexOf(',') + 1; 138 errorMessage = errorMessage.mid(pointer, errorMessage.length()); 139 } 140 141 pointer = errorMessage.indexOf(']:'); 142 if(pointer > -1){ 143 errorMessage = errorMessage.mid(0, pointer + 1); 144 } 145 fieldName = errorMessage.mid(errorMessage.indexOf('[') + 1,errorMessage.indexOf(']')-errorMessage.indexOf('[')-1).trim(); 146 if(fieldName != null) { 147 Schema.DescribeFieldResult fieldResult = getSObjectFieldDescribeResult(sObjectName,fieldName); 148 if(fieldResult != null) { 149 fieldName = fieldResult.getLabel(); 150 } 151 } 152 pointer = errorMessage.indexOf('['); 153 if(pointer > -1){ 154 errorMessage = errorMessage.mid(0, pointer); 155 } 156 errorMessage += fieldName; 157 return errorMessage; 158 } 159 160 /* 161 * 通過(guò)sObject名稱以及field名稱獲取field相關(guān)describe result信息 162 * @param sObjectName object的api name 163 * @param fieldName field的api name 164 * @return 此field的describe result 165 */ 166 private static Schema.DescribeFieldResult getSObjectFieldDescribeResult(String sObjectName,String fieldName) { 167 List<Schema.DescribeSObjectResult> sObjectResultList = Schema.describeSObjects(new String[]{sObjectName}); 168 if(sObjectResultList == null || sObjectResultList.size() == 0) { 169 return null; 170 } else { 171 Schema.DescribeSObjectResult sObjectResult = sObjectResultList.get(0); 172 Map<String,SObjectField> maps = sObjectResult.fields.getMap(); 173 Schema.SObjectField sObjectField = maps.get(fieldName); 174 if(sObjectField == null) { 175 return null; 176 } else { 177 Schema.DescribeFieldResult fieldDescribeResult = sObjectField.getDescribe(); 178 return fieldDescribeResult; 179 } 180 } 181 } 182 183 }

使用演示：

1.Unique字段插入重復(fù)

2.必填字段為空

3.Validation Rule未通過(guò)

總結(jié)：此篇主要封裝簡(jiǎn)單的異常的友好顯示。當(dāng)前很多常量都放在了程序里，建議放在custom label中，然后對(duì)相關(guān)進(jìn)行translate，這樣可以保證國(guó)際化使用，否則現(xiàn)在language為英文可以，中文使用會(huì)有問(wèn)題，有用到的可以自行優(yōu)化。

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轉(zhuǎn)載于:https://www.cnblogs.com/zero-zyq/p/6143983.html

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