业务表对应主键为varChar类型且无自增策略的新增与修改问题
上周五领到一个需求，在开发过程中遇到一点小插曲，在此记录下，话不多说，直接看表结构：
这里机构id为主键且无自增策略，也就是说机构id这个字段是通过手动输入保存的，还有这个机构DES密钥的问题（在此处花费了较长时间）。下面直接看代码（使用SpringBoot+Vue+Mybatis / Mybatis plus）:
这段代码可以看到修改或新增提交from表单时是通过branchId（主键）来判断具体走新增还是更新，所以此套逻辑必定不行。
于是做了修改，下面为修改后的代码：
/** 新增按钮操作 */
handleAdd() {
this.reset();
this.open = true;
this.title = "添加机构信息管理";
this.flag=true; //新增绑定true标识
},
/** 修改按钮操作 */
handleUpdate(row) {
this.flag=false; //新增绑定true标识
this.reset();
const branchId = row.branchId || this.ids
getWalletInfo(branchId).then(response => {
this.form = response.data;
this.open = true;
this.title = "修改机构信息管理";
});
},
修改提交form表单逻辑（此时通过绑定的flag标识进行逻辑判断）：
/** 提交按钮 */
submitForm() {
this.$refs["form"].validate(valid => {
if (valid) {
if (!this.flag) {
updateWalletInfo(this.form).then(response => {
this.$modal.msgSuccess("修改成功");
this.open = false;
this.getList();
});
} else {
addWalletInfo(this.form).then(response => {
this.$modal.msgSuccess("新增成功");
this.open = false;
this.getList();
});
}
}
});
},
解决了功能问题还有一些细节需要处理。修改时需要将branchId（主键）置为不可编辑状态：
效果：
做完以上操作后，尝试对数据进行修改时，结果又产生报错，以下为报错信息：
at org.apache.ibatis.executor.BaseExecutor.update(BaseExecutor.java:117)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.ibatis.plugin.Invocation.proceed(Invocation.java:49)
at com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor.intercept(MybatisPlusInterceptor.java:106)
at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:59)
at com.sun.proxy.$Proxy164.update(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:61)
at com.sun.proxy.$Proxy164.update(Unknown Source)
at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:197)
... 146 common frames omitted
Caused by: net.sf.jsqlparser.parser.ParseException: Encountered unexpected token: "3" <S_LONG>
at line 9, column 13.
Was expecting one of:
"ACTION"
"ANY"
"BYTE"
"CASCADE"
"CAST"
"CHANGE"
"CHAR"
"CHARACTER"
"COLUMN"
"COLUMNS"
"COMMENT"
"COMMIT"
"CREATE"
"CYCLE"
"DESC"
"DESCRIBE"
"DISABLE"
"DIV"
"DO"
"DOUBLE"
"DUPLICATE"
"ENABLE"
"END"
"EXCLUDE"
"EXTRACT"
"FALSE"
"FIRST"
"FN"
"FOLLOWING"
"FORMAT"
"GROUP"
"IF"
"INDEX"
"INSERT"
"INTERVAL"
"ISNULL"
"KEY"
"LAST"
"LEFT"
"LIMIT"
"MATERIALIZED"
"NEXTVAL"
"NO"
"NOLOCK"
"NULLS"
"OF"
"OFFSET"
"ON"
"OPEN"
"OPTIMIZE"
"ORDER"
"OVER"
"PARTITION"
"PATH"
"PERCENT"
"PRECISION"
"PRIMARY"
"PRIOR"
"PROCEDURE"
"PUBLIC"
"RANGE"
"READ"
"REPLACE"
"RIGHT"
"ROW"
"ROWS"
"SCHEMA"
"SEPARATOR"
"SEQUENCE"
"SESSION"
"SET"
"SIBLINGS"
"SIZE"
"START"
"TABLE"
"TABLES"
"TEMP"
"TEMPORARY"
"TO"
"TOP"
"TRUE"
"TRUNCATE"
"TYPE"
"UNSIGNED"
"VALIDATE"
"VALUE"
"VALUES"
"VIEW"
"XML"
"ZONE"
<K_DATETIMELITERAL>
<K_DATE_LITERAL>
<S_IDENTIFIER>
<S_QUOTED_IDENTIFIER>
at net.sf.jsqlparser.parser.CCJSqlParser.generateParseException(CCJSqlParser.java:26538)
at net.sf.jsqlparser.parser.CCJSqlParser.jj_consume_token(CCJSqlParser.java:26377)
at net.sf.jsqlparser.parser.CCJSqlParser.RelObjectNameExt(CCJSqlParser.java:3882)
at net.sf.jsqlparser.parser.CCJSqlParser.RelObjectNameList(CCJSqlParser.java:3135)
at net.sf.jsqlparser.parser.CCJSqlParser.Column(CCJSqlParser.java:3173)
at net.sf.jsqlparser.parser.CCJSqlParser.Update(CCJSqlParser.java:1138)
at net.sf.jsqlparser.parser.CCJSqlParser.SingleStatement(CCJSqlParser.java:138)
at net.sf.jsqlparser.parser.CCJSqlParser.Statements(CCJSqlParser.java:502)
at net.sf.jsqlparser.parser.CCJSqlParserUtil.parseStatements(CCJSqlParserUtil.java:186)
at net.sf.jsqlparser.parser.CCJSqlParserUtil.parseStatements(CCJSqlParserUtil.java:176)
at com.baomidou.mybatisplus.extension.parser.JsqlParserSupport.parserMulti(JsqlParserSupport.java:63)
... 168 common frames omitted
14:42:32.410 [http-nio-8899-exec-6] WARN o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver - [logException,208] - Resolved [org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: <EOL><EOL>### Error updating database. Cause: com.baomidou.mybatisplus.core.exceptions.MybatisPlusException: Failed to process, Error SQL: update wallet_branch_info<EOL> SET CUST_NO = ?,<EOL> BRANCH_NAME = ?,<EOL> PARENT_BRANCH_ID = ?,<EOL> STATUS = ?,<EOL> OPEN_DATE = ?,<EOL> OPEN_TIME = ?,<EOL> MD5_KEY = ?,<EOL> 3DES_KEY = ?,<EOL> LINK_NAME = ?,<EOL> MOBILE_PHONE = ?,<EOL> E_MAIL = ? <EOL> where BRANCH_ID = ?<EOL><EOL>### The error may exist in file [D:\hzsr\platform-business\target\classes\mapper\business\WalletBranchInfoMapper.xml]<EOL><EOL>### The error may involve com.horzits.business.mapper.WalletBranchInfoMapper.updateWalletBranchInfo<EOL><EOL>### The error occurred while executing an update<EOL><EOL>### Cause: com.baomidou.mybatisplus.core.exceptions.MybatisPlusException: Failed to process, Error SQL: update wallet_branch_info<EOL> SET CUST_NO = ?,<EOL> BRANCH_NAME = ?,<EOL> PARENT_BRANCH_ID = ?,<EOL> STATUS = ?,<EOL> OPEN_DATE = ?,<EOL> OPEN_TIME = ?,<EOL> MD5_KEY = ?,<EOL> 3DES_KEY = ?,<EOL> LINK_NAME = ?,<EOL> MOBILE_PHONE = ?,<EOL> E_MAIL = ? <EOL> where BRANCH_ID = ?]
Creating a new SqlSession
SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@3bf20f8d] was not registered for synchronization because synchronization is not active
JDBC Connection [ConnectionProxyImpl{connectedTime=2024-06-17 14:39:22.55, closeCount=0, lastValidateTimeMillis=2024-06-17 14:42:21.375}] will not be managed by Spring
==> Preparing: insert into sys_oper_log(title, business_type, method, request_method, operator_type, oper_name, dept_name, oper_url, oper_ip, oper_location, oper_param, json_result, status, error_msg, cost_time, oper_time) values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, sysdate())
==> Parameters: 机构信息管理(String), 2(Integer), com.horzits.business.controller.WalletBranchInfoController.edit()(String), PUT(String), 1(Integer), admin(String), 研发部门(String), /business/walletInfo(String), 127.0.0.1(String), 内网IP(String), {"_3desKey":"2","branchId":"2","branchName":"2","custNo":"21111","email":"2","linkName":"2","md5Key":"2","mobilePhone":"2","openDate":"2个人","openTime":"2","parentBranchId":"2","status":"0"}(String), null, 1(Integer), nested exception is org.apache.ibatis.exceptions.PersistenceException:
### Error updating database. Cause: com.baomidou.mybatisplus.core.exceptions.MybatisPlusException: Failed to process, Error SQL: update wallet_branch_info
SET CUST_NO = ?,
BRANCH_NAME = ?,
PARENT_BRANCH_ID = ?,
STATUS = ?,
OPEN_DATE = ?,
OPEN_TIME = ?,
MD5_KEY = ?,
3DES_KEY = ?,
LINK_NAME = ?,
MOBILE_PHONE = ?,
E_MAIL = ?
where BRANCH_ID = ?
### The error may exist in file [D:\hzsr\platform-business\target\classes\mapper\business\WalletBranchInfoMapper.xml]
### The error may involve com.horzits.business.mapper.WalletBranchInfoMapper.updateWalletBranchInfo
### The error occurred while executing an update
### Cause: com.baomidou.mybatisplus.core.exceptions.MybatisPlusException: Failed to process, Error SQL: update wallet_branch_info
SET CUST_NO = ?,
BRANCH_NAME = ?,
PARENT_BRANCH_ID = ?,
STATUS = ?,
OPEN_DATE = ?,
OPEN_TIME = ?,
MD5_KEY = ?,
3DES_KEY = ?,
LINK_NAME = ?,
MOBILE_PHONE = ?,
E_MAIL = ?
where BRANCH_ID = ?(String), 12(Long)
<== Updates: 1
Closing non transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@3bf20f8d]
以下为xml映射：
<update id="updateWalletBranchInfo" parameterType="WalletBranchInfo">
update wallet_branch_info
<trim prefix="SET" suffixOverrides=",">
<if test="custNo != null and custNo != ''">CUST_NO = #{custNo},</if>
<if test="branchName != null and branchName != ''">BRANCH_NAME = #{branchName},</if>
<if test="parentBranchId != null and parentBranchId != ''">PARENT_BRANCH_ID = #{parentBranchId},</if>
<if test="status != null and status != ''">STATUS = #{status},</if>
<if test="openDate != null and openDate != ''">OPEN_DATE = #{openDate},</if>
<if test="openTime != null and openTime != ''">OPEN_TIME = #{openTime},</if>
<if test="md5Key != null and md5Key != ''">MD5_KEY = #{md5Key},</if>
<if test="_3desKey != null and _3desKey != ''">3DES_KEY = #{_3desKey},</if>
<if test="linkName != null and linkName != ''">LINK_NAME = #{linkName},</if>
<if test="mobilePhone != null and mobilePhone != ''">MOBILE_PHONE = #{mobilePhone},</if>
<if test="email != null and email != ''">E_MAIL = #{email},</if>
</trim>
where BRANCH_ID = #{branchId}
</update>
根据报错检查映射以及参数占位等等问题均无果。以下为xml映射，尝试将这一行删掉：
<if test="_3desKey != null and _3desKey != ''">3DES_KEY = #{_3desKey},</if>
结果便可以修改成功。至此原因找到，得出以下总结：使用Mybatis / Mybatis plus 在编译解析xml中sql语句时，无法编译解析数字开头的字段。
解决方法：（使用``将特殊字段包裹起来）
