datax replace 的方法

 

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{     "job": {         "content": [{             "reader": {                 "name": "mysqlreader",                 "parameter": {                     "column": [                         "allnum", "reqid"                     ],                     "connection": [{                         "jdbcUrl": ["jdbc:mysql://127.0.0.1:3306/dmp"],                         "table": ["tb_dmp_requser"]                     }],                     "password": "123456",                     "username": "root"                 }             },             "writer": {                 "name": "mysqlwriter",                 "parameter": {                     "column": [                         "allnum", "reqid"                     ],                             "preSql": [                         "delete from tb_dmp_requser"                     ],                     "connection": [{                         "jdbcUrl": "jdbc:mysql://127.0.0.1:3306/dota2_databank",                         "table": ["tb_dmp_requser"]                     }],                     "password": "123456",                     "username": "root",                     "writeMode": "replace"                 }             }         }],         "setting": {             "speed": {                 "channel": "2"             }         }     } }