今天本来是想试一下springbatch看下各个表中都会保存什么内容，结果我就把九张表中所有的内容都删了，然后重新跑批结果又一个坑，报错：
org.springframework.dao.DuplicateKeyException: PreparedStatementCallback; SQL [INSERT into BATCH_JOB_INSTANCE(JOB_INSTANCE_ID, JOB_NAME, JOB_KEY, VERSION) values (?, ?, ?, ?)]; Duplicate entry '0' for key 'PRIMARY'; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Duplicate entry '0' for key 'PRIMARY'
后来又是一顿百度啊，结果是那三个以_seq结尾的表中不能为空有初始化内容
（本人已验证）正确的初始化脚本信息为：
1 -- Autogenerated: do not edit this file 2 3 CREATE TABLE BATCH_JOB_INSTANCE ( 4 JOB_INSTANCE_ID BIGINT NOT NULL PRIMARY KEY , 5 VERSION BIGINT , 6 JOB_NAME VARCHAR(100) NOT NULL, 7 JOB_KEY VARCHAR(32) NOT NULL, 8 constraint JOB_INST_UN unique (JOB_NAME, JOB_KEY) 9 ) ENGINE=InnoDB; 10 11 CREATE TABLE BATCH_JOB_EXECUTION ( 12 JOB_EXECUTION_ID BIGINT NOT NULL PRIMARY KEY , 13 VERSION BIGINT , 14 JOB_INSTANCE_ID BIGINT NOT NULL, 15 CREATE_TIME DATETIME NOT NULL, 16 START_TIME DATETIME DEFAULT NULL , 17 END_TIME DATETIME DEFAULT NULL , 18 STATUS VARCHAR(10) , 19 EXIT_CODE VARCHAR(2500) , 20 EXIT_MESSAGE VARCHAR(2500) , 21 LAST_UPDATED DATETIME, 22 JOB_CONFIGURATION_LOCATION VARCHAR(2500) NULL, 23 constraint JOB_INST_EXEC_FK foreign key (JOB_INSTANCE_ID) 24 references BATCH_JOB_INSTANCE(JOB_INSTANCE_ID) 25 ) ENGINE=InnoDB; 26 27 CREATE TABLE BATCH_JOB_EXECUTION_PARAMS ( 28 JOB_EXECUTION_ID BIGINT NOT NULL , 29 TYPE_CD VARCHAR(6) NOT NULL , 30 KEY_NAME VARCHAR(100) NOT NULL , 31 STRING_VAL VARCHAR(250) , 32 DATE_VAL DATETIME DEFAULT NULL , 33 LONG_VAL BIGINT , 34 DOUBLE_VAL DOUBLE PRECISION , 35 IDENTIFYING CHAR(1) NOT NULL , 36 constraint JOB_EXEC_PARAMS_FK foreign key (JOB_EXECUTION_ID) 37 references BATCH_JOB_EXECUTION(JOB_EXECUTION_ID) 38 ) ENGINE=InnoDB; 39 40 CREATE TABLE BATCH_STEP_EXECUTION ( 41 STEP_EXECUTION_ID BIGINT NOT NULL PRIMARY KEY , 42 VERSION BIGINT NOT NULL, 43 STEP_NAME VARCHAR(100) NOT NULL, 44 JOB_EXECUTION_ID BIGINT NOT NULL, 45 START_TIME DATETIME NOT NULL , 46 END_TIME DATETIME DEFAULT NULL , 47 STATUS VARCHAR(10) , 48 COMMIT_COUNT BIGINT , 49 READ_COUNT BIGINT , 50 FILTER_COUNT BIGINT , 51 WRITE_COUNT BIGINT , 52 READ_SKIP_COUNT BIGINT , 53 WRITE_SKIP_COUNT BIGINT , 54 PROCESS_SKIP_COUNT BIGINT , 55 ROLLBACK_COUNT BIGINT , 56 EXIT_CODE VARCHAR(2500) , 57 EXIT_MESSAGE VARCHAR(2500) , 58 LAST_UPDATED DATETIME, 59 constraint JOB_EXEC_STEP_FK foreign key (JOB_EXECUTION_ID) 60 references BATCH_JOB_EXECUTION(JOB_EXECUTION_ID) 61 ) ENGINE=InnoDB; 62 63 CREATE TABLE BATCH_STEP_EXECUTION_CONTEXT ( 64 STEP_EXECUTION_ID BIGINT NOT NULL PRIMARY KEY, 65 SHORT_CONTEXT VARCHAR(2500) NOT NULL, 66 SERIALIZED_CONTEXT TEXT , 67 constraint STEP_EXEC_CTX_FK foreign key (STEP_EXECUTION_ID) 68 references BATCH_STEP_EXECUTION(STEP_EXECUTION_ID) 69 ) ENGINE=InnoDB; 70 71 CREATE TABLE BATCH_JOB_EXECUTION_CONTEXT ( 72 JOB_EXECUTION_ID BIGINT NOT NULL PRIMARY KEY, 73 SHORT_CONTEXT VARCHAR(2500) NOT NULL, 74 SERIALIZED_CONTEXT TEXT , 75 constraint JOB_EXEC_CTX_FK foreign key (JOB_EXECUTION_ID) 76 references BATCH_JOB_EXECUTION(JOB_EXECUTION_ID) 77 ) ENGINE=InnoDB; 78 79 CREATE TABLE BATCH_STEP_EXECUTION_SEQ ( 80 ID BIGINT NOT NULL, 81 UNIQUE_KEY CHAR(1) NOT NULL, 82 constraint UNIQUE_KEY_UN unique (UNIQUE_KEY) 83 ) ENGINE=InnoDB; 84 85 INSERT INTO BATCH_STEP_EXECUTION_SEQ (ID, UNIQUE_KEY) select * from (select 0 as ID, '0' as UNIQUE_KEY) as tmp where not exists(select * from BATCH_STEP_EXECUTION_SEQ); 86 87 CREATE TABLE BATCH_JOB_EXECUTION_SEQ ( 88 ID BIGINT NOT NULL, 89 UNIQUE_KEY CHAR(1) NOT NULL, 90 constraint UNIQUE_KEY_UN unique (UNIQUE_KEY) 91 ) ENGINE=InnoDB; 92 93 INSERT INTO BATCH_JOB_EXECUTION_SEQ (ID, UNIQUE_KEY) select * from (select 0 as ID, '0' as UNIQUE_KEY) as tmp where not exists(select * from BATCH_JOB_EXECUTION_SEQ); 94 95 CREATE TABLE BATCH_JOB_SEQ ( 96 ID BIGINT NOT NULL, 97 UNIQUE_KEY CHAR(1) NOT NULL, 98 constraint UNIQUE_KEY_UN unique (UNIQUE_KEY) 99 ) ENGINE=InnoDB; 100 101 INSERT INTO BATCH_JOB_SEQ (ID, UNIQUE_KEY) select * from (select 0 as ID, '0' as UNIQUE_KEY) as tmp where not exists(select * from BATCH_JOB_SEQ);