Cause: org.postgresql.util.PSQLException: ERROR: duplicate key value violates unique constraint "

插入数据postgre 报错如下

01	### Error updating database.  Cause: org.postgresql.util.PSQLException: ERROR: duplicate key value violates unique constraint "vehicle__appKey_pkey"

02	### The error may involve com.sq.platform.basePlatform.dao.VehicleMapper.insertVehicleAppkey-Inline

03	### The error occurred while setting parameters

04	### SQL: insert into vehicle__appkey(vehicle_id_fk, appkey_id_fk) values                      (?, ?)

05	### Cause: org.postgresql.util.PSQLException: ERROR: duplicate key value violates unique constraint "vehicle__appKey_pkey"

06	; SQL []; ERROR: duplicate key value violates unique constraint "vehicle__appKey_pkey"; nested exception is org.postgresql.util.PSQLException: ERROR: duplicate key value violates unique constraint "vehicle__appKey_pkey"

07	at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.doTranslate(SQLErrorCodeSQLExceptionTranslator.java:239)

08	at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:73)

09	at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:74)

10	at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:399)

11	at com.sun.proxy.$Proxy11.insert(Unknown Source)

表中 vehicle__appkey  id字段如下

1 id integer NOT NULL DEFAULT nextval('"vehicle__appKey_id_seq"'::regclass),

1

1

1 vehicle__appKey_pkey 序列表如下

1 "font-family: Arial, Helvetica, sans-serif;">-- Sequence: "vehicle__appKey_id_seq"

01 "code" class="java">
02 -- DROP SEQUENCE "vehicle__appKey_id_seq";
03
04 CREATE SEQUENCE "vehicle__appKey_id_seq"
05   INCREMENT 1
06   MINVALUE 1
07   MAXVALUE 9223372036854775807
08   "color:#ff0000;">START 711
09   CACHE 1;
10 ALTER TABLE "vehicle__appKey_id_seq"
11   OWNER TO postgres;

不难看出以上错误是由于 vehicle__appkey中id字段重复导致的，而id字段的值来自于 vehicle__appKey_pkey 序列表，   START 711 标示下一个id值为712，而712的id   vehicle__appkey表中已经存在了，所以插入数据时报以上这个错误

解决方法：将"vehicle__appKey_id_seq"中的当前值设为为vehicle__appkey  id的最大值