createStoredProcedureQuery未解决 [英] createStoredProcedureQuery is not resolved

问题描述

这里是我的代码，而createStoredProcedureQuery在Eclipse中已经有红线，并没有解决，我试过很多方法还是无法得到什么是错的。

here is my code and createStoredProcedureQuery has redline underneath in eclipse, and not resolved, I tried many ways still could not get what is wrong.

private static EntityManagerFactory factory;

public static void main(String[] args) {
    factory = Persistence.createEntityManagerFactory("mypersistenceUnit");
    EntityManager em = factory.createEntityManager();

    // Create call stored procedure
    em.getTransaction().begin();
    StoredProcedureQuery storedProcedure = em.**createStoredProcedureQuery**("getCode");
    // set parameters
    storedProcedure.registerStoredProcedureParameter("name", String.class, ParameterMode.IN);
    storedProcedure.registerStoredProcedureParameter("num", String.class, ParameterMode.IN);
    storedProcedure.registerStoredProcedureParameter("code", String.class, ParameterMode.OUT);

    // execute SP
    storedProcedure.execute();
    // get result
    String code= (String)storedProcedure.getOutputParameterValue("code");
    System.out.println("code is: " + code);
    em.getTransaction().commit();
    em.close();
}

推荐答案

JPA 2.1是什么方法。如果您不在CLASSPATH中包含JPA API 2.1 jar（而是使用JPA API 2.0），那么您将得到这一点。修复您的JPA API jar版本（删除JPA API 2.0并包含JPA API 2.1）

JPA 2.1 is what provides that method. If you don't include the JPA API 2.1 jar in your CLASSPATH (and instead use JPA API 2.0) then you will get that. Fix your JPA API jar version (remove JPA API 2.0 and include JPA API 2.1)

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