Spring JcbcTemplate 调用 Oracle Stored Proc。春天 3.2

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【中文标题】Spring JcbcTemplate 调用 Oracle Stored Proc。春天 3.2【英文标题】:Spring JcbcTemplate to call Oracle Stored Proc. Spring 3.2 【发布时间】:2015-12-30 00:41:02 【问题描述】:

我有一些使用 CallableStatement 的直接 JDBC 代码。我一直在尝试利用 DataSource、JdbcTemplate 和 SimpleJdbcCall 将其转换为 Spring。我基本上已经尝试了我能找到的 Spring 文档中的所有教程、示例和 sn-ps。通过调整,所有 Spring 解决方案都会产生相同的结果:

org.springframework.jdbc.BadSqlGrammarException: CallableStatementCallback; bad SQL grammar [call UPCLSCH.P_GET_CLASS_SCHEDULE()]; nested exception is java.sql.SQLException: ORA-06550: line 1, column 7:
PLS-00306: wrong number or types of arguments in call to 'P_GET_CLASS_SCHEDULE'
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored

这是正在准备语句的日志部分:

2015-12-29 17:17:18 DEBUG SimpleJdbcCall:214 - Added declared parameter for [p_get_class_schedule]: p_classsched_ref_out
2015-12-29 17:17:18 DEBUG SimpleJdbcCall:214 - Added declared parameter for [p_get_class_schedule]: p_term
2015-12-29 17:17:18 DEBUG SimpleJdbcCall:214 - Added declared parameter for [p_get_class_schedule]: p_scauid
2015-12-29 17:17:18 DEBUG SimpleJdbcCall:214 - Added declared parameter for [p_get_class_schedule]: p_pidm
2015-12-29 17:17:18 DEBUG SimpleJdbcCall:336 - JdbcCall call not compiled before execution - invoking compile
2015-12-29 17:17:18 DEBUG DataSourceUtils:110 - Fetching JDBC Connection from DataSource
2015-12-29 17:17:18 DEBUG DriverManagerDataSource:162 - Creating new JDBC DriverManager Connection to [jdbc:oracle:thin:@umadmn.umt.edu:7895:ADMNRED]
2015-12-29 17:17:21 DEBUG CallMetaDataProviderFactory:123 - Using org.springframework.jdbc.core.metadata.OracleCallMetaDataProvider
2015-12-29 17:17:21 DEBUG CallMetaDataProvider:278 - Retrieving metadata for UPCLSCH/AP_ADMN/P_GET_CLASS_SCHEDULE
2015-12-29 17:17:22 DEBUG DataSourceUtils:332 - Returning JDBC Connection to DataSource
2015-12-29 17:17:22 DEBUG SimpleJdbcCall:304 - Compiled stored procedure. Call string is [call UPCLSCH.P_GET_CLASS_SCHEDULE()]
2015-12-29 17:17:22 DEBUG SimpleJdbcCall:282 - SqlCall for procedure [p_get_class_schedule] compiled
2015-12-29 17:17:22 DEBUG SimpleJdbcCall:385 - The following parameters are used for call call UPCLSCH.P_GET_CLASS_SCHEDULE() with: 
2015-12-29 17:17:22 DEBUG JdbcTemplate:937 - Calling stored procedure [call UPCLSCH.P_GET_CLASS_SCHEDULE()]
2015-12-29 17:17:22 DEBUG DataSourceUtils:110 - Fetching JDBC Connection from DataSource
2015-12-29 17:17:22 DEBUG DriverManagerDataSource:162 - Creating new JDBC DriverManager Connection to [jdbc:oracle:thin:@xxxxx.xxx.xxx:7895:PRIVATE]
2015-12-29 17:17:24 DEBUG DataSourceUtils:332 - Returning JDBC Connection to DataSource

这里是直接有效的 JDBC 代码(没有连接细节):

private static List<ScheduledClass> callOracleStoredProcCURSORParameter() throws SQLException 
        Connection connection = null;
        CallableStatement callableStatement = null;
        ResultSet rs = null;
        List<ScheduledClass> scheduledClassList = new ArrayList<ScheduledClass>();

        String getDBUSERCursorSql = "call upclsch.p_get_class_schedule (?, ?, ?, ?)";

        try 
            connection = getApConnection();
            callableStatement = connection.prepareCall(getDBUSERCursorSql);

            callableStatement.registerOutParameter("p_classsched_ref_out", OracleTypes.CURSOR);
            callableStatement.setString("p_term", "201570");          //term code
            callableStatement.setString("p_scauid", "rs213498");
            callableStatement.setString("p_pidm", null);

            callableStatement.executeUpdate();
            rs = (ResultSet) callableStatement.getObject("p_classsched_ref_out");

            while (rs.next()) 
                ScheduledClass sc = new ScheduledClass();
                sc.setCourseNumber(rs.getString("subject_code") + rs.getString("course_number"));
                sc.setCourseTitle(rs.getString("course_title"));
                scheduledClassList.add(sc);
            
         catch (SQLException e) 
            e.printStackTrace();
        
        return scheduledClassList;
    

这是我的非工作 Spring 代码(注意注释掉的部分在将“in”传递给 sjc.execute() 时会产生相同的结果):

public void setDataSource(DataSource dataSource)
    this.jt = new JdbcTemplate(dataSource);
    jt.setResultsMapCaseInsensitive(true);
    sjc = new SimpleJdbcCall(jt)
            .withCatalogName("upclsch")
            .withProcedureName("p_get_class_schedule");


    public Map<String, Object> execute(String termCode, String netId)

        sjc.useInParameterNames("p_term", "p_scauid", "p_pidm")
            .declareParameters(new SqlOutParameter("p_classsched_ref_out", OracleTypes.CURSOR),
            new SqlParameter("p_term", OracleTypes.VARCHAR),
            new SqlParameter("p_scauid", OracleTypes.VARCHAR),
            new SqlParameter("p_pidm", OracleTypes.VARCHAR));

//        SqlParameterSource in = new MapSqlParameterSource()
//                .addValue("p_scauid", netId, OracleTypes.VARCHAR)
//                .addValue("p_term", termCode, OracleTypes.VARCHAR)
//                .addValue("p_classsched_ref_out", OracleTypes.CURSOR);


        Map<String, Object> results = sjc.execute();

        return results;
    

我似乎无法在 TRACE 或 DEBUG 级别获得任何其他信息,以查看我的参数是否排序不正确。因此,我正在寻求使用此技术完成此任务的任何人的帮助。我不打算扩展 StoredProcedure,因为 Spring 文档建议将其用于 3.2。

【问题讨论】:

堆栈跟踪显示没有参数进入数据库,您需要在执行调用中传递一个参数数组(termCode,netId,null)。 我也试过了。如果您查看被注释掉的部分,您会看到它都被添加到名为“in”的 SqlParamaterSource 中。当我尝试这种方法时,我使用:sjc.execute(in),而不是您在代码中看到的空调用。 但是,我一定会尝试使用您的 (@Magnus) 方法添加它们。 我就是这样试的:Map&lt;String, Object&gt; results = sjc.execute(termCode, netId, null); 日志和上面一样。 这是调试中的样子:sjc:SimpleJdbcCall@1658 termCode: "201570" netId: "rs213498" 【参考方案1】:

已解决:我在逐步浏览 Spring 源代码后发现了它。对于那些可能感兴趣的人,它涉及声明过程实际使用的参数,然后使用 SqlParameterSource 来保存映射到声明的名称的值。请注意,我在添加参数时以相反的顺序将值添加到地图中。另外注意我添加了:.withoutProcedureColumnMetaDataAccess()。像我一样声明自己的参数时,这一点很重要。

public class ScheduledClassesDAO 
    private DataSource dataSource;
    private JdbcTemplate jt;
    private SimpleJdbcCall sjc;

    public void setDataSource(DataSource dataSource)
        this.jt = new JdbcTemplate(dataSource);
        jt.setResultsMapCaseInsensitive(true);
        sjc = new SimpleJdbcCall(jt)
                .withCatalogName("upclsch")
                .withProcedureName("p_get_class_schedule");
    

    /**
     * This method is used to return scheduled classes by calling a stored-proc.
     * @param termCode   String: The term/semester for this lookup.
     * @param netId      String: The netId of the student to lookup
     * @return           Map<String, Object>
     */
    public Map<String, Object> execute(String termCode, String netId)

        sjc.useInParameterNames("p_term", "p_scauid", "p_pidm")
            .withoutProcedureColumnMetaDataAccess()
            .declareParameters(new SqlOutParameter("p_classsched_ref_out", OracleTypes.CURSOR),
                    new SqlParameter("p_term", OracleTypes.VARCHAR),
                    new SqlParameter("p_scauid", OracleTypes.VARCHAR),
                    new SqlParameter("p_pidm", OracleTypes.NUMBER));

        SqlParameterSource in = new MapSqlParameterSource()
                .addValue("p_pidm", null)
                .addValue("p_scauid", netId)
                .addValue("p_term", termCode);


        Map<String, Object> results = sjc.execute(in);

        return results;
    

【讨论】:

写道“请注意,我在添加参数时以相反的顺序将值添加到地图中”。您正在使用 MapSqlParameterSource - 值添加到地图的顺序无关紧要。【参考方案2】:

您可以将 StoredProcedure 用于此用例。您可能没有将参数传递给过程。

请参阅下面的示例代码。

TestProcedure.java

import java.util.List;
import java.util.Map;

import org.springframework.jdbc.core.JdbcTemplate;

public class TestProcedure 
    public void main(String[] args) 
        System.out.println("Started");
        JdbcTemplate jdbcTemplate = null;//get your jdbcTemplate

        MyProcedure proc = new MyProcedure(jdbcTemplate);

        Map<String, Object> resultMap = proc.execute("201570","rs213498",null);
        List<Map> classschedList = (List)resultMap.get(MyProcedure.P_CLASSSCHED_REF_OUT);
    


我的程序

import java.util.HashMap;
import java.util.Map;

import oracle.jdbc.internal.OracleTypes;

import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.SqlOutParameter;
import org.springframework.jdbc.core.SqlParameter;
import org.springframework.jdbc.object.StoredProcedure;

public class MyProcedure extends StoredProcedure 
    public static final String P_CLASSSCHED_REF_OUT = "p_classsched_ref_out";
    public static final String P_TERM = "p_term";
    public static final String P_SCAUID = "p_scauid";
    public static final String P_PIDM = "p_pidm";
    public static final String PROC_NAME = "upclsch.p_get_class_schedule";

    public MyProcedure(JdbcTemplate jdbcTemplate) 
        setDataSource(jdbcTemplate.getDataSource());
        setSql(PROC_NAME);
        setFetchSize(100);

        declareParameter(new SqlOutParameter(P_CLASSSCHED_REF_OUT, OracleTypes.CURSOR, new MyRowMapper()));
        declareParameter(new SqlParameter(P_TERM, OracleTypes.VARCHAR));
        declareParameter(new SqlParameter(P_SCAUID, OracleTypes.VARCHAR));
        declareParameter(new SqlParameter(P_PIDM, OracleTypes.VARCHAR));

        compile();
    

    /**
     * Execute stored procedure.
     */
    public Map<String, Object> executeProcedure(String term, String scauid, String pidm) 
        // set the input params
        Map<String, Object> inParameters = new HashMap<String, Object>();
        inParameters.put(P_TERM, term);
        inParameters.put(P_SCAUID, scauid);
        inParameters.put(P_PIDM, pidm);
        // now execute
        Map<String, Object> outputMap = execute(inParameters); // Call on parent class
        return outputMap;
    

MyRowMapper

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.HashMap;
import java.util.Map;

import org.springframework.jdbc.core.RowMapper;

public class MyRowMapper implements RowMapper<Map> 
    public Map mapRow(ResultSet rs, int paramInt) throws SQLException 
        Map response = new HashMap();
        // here we populate the data using the returned cursor resultset
        // response.setTerm(rs.getString("cursor_col1");
        return response;
    

【讨论】:

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