转换为 simplejdbccall 结果集为 java 个对象

Question

我正在调用 DB2 过程，该过程采用输入参数和 returns 结果集。我怎样才能将 O/P 映射到我的 pojo class。我必须将结果映射到 nexted pojo classes.

    simpleJdbcCall = new SimpleJdbcCall(jdbctemplate)
                    .withSchemaName("myschema")
                    .withProcedureName("DB2-PROC")
                    .declareParameters(
                            new SqlParameter("1", Types.VARCHAR)
                        );
                        
    Map<String, Object> map =   simpleJdbcCall.execute("2020-01-01");
    
    for (Map.Entry<String, Object> entry : map.entrySet()) {
  System.out.println("Entry value  is " + entry.getValue() );
    }
        
        //my o/p
        Entry value  is [{Col_1=abc, col_2=abc,col_2=xyz, col_2=abc},....];

Answer 1

您可以使用 returningResultSet(parameterName, rowMapper) 方法将值映射到对象。

这里有一些参考代码：

SimpleJdbcCall procedureActor = new SimpleJdbcCall(dataSource)
            .withSchemaName("myschema")
            .withProcedureName("DB2-PROC")
            .declareParameters(
                    new SqlParameter("1", Types.VARCHAR))
            .returningResultSet("mapObjRefrence", new RowMapper<Contact>() {
     
                @Override
                public Contact mapRow(ResultSet rs, int rowNum) throws SQLException {
                    YourPojo pojo = new YourPojo();
                     
                    pojo.setId(rs.getInt("col_1"));
                    pojo.setName(rs.getString("col_2"));
                    pojo.setEmail(rs.getString("col_2"));
                    pojo.setAddress(rs.getString("col_3"));
                    pojo.setTelephone(rs.getString("col_4"));
                     
                    return contact;
                }
            });
     
    Map<String, Object> out = procedureActor.execute("2020-01-01");
     
    List<YourPojo> listPojos = (List<YourPojo>) out.get("mapObjRefrence");

您还可以检查多个 table 结果：How to get multi table results using SimpleJDBCCall in spring?

转换为 simplejdbccall 结果集为 java 个对象

Convert to simplejdbccall resultset to java objects

spring

spring-jdbc

jdbctemplate

spring-data-jpa

spring-boot