hibernate - 无法将 Postgres 与 hibernate 连接

Question

我正在尝试将 Hibernate(3.2.5) 与 PostgreSQL 8.2 连接，但是当我尝试将类证书与 hbm.xml 文件中的关系证书映射时出现以下异常:

PSQLException: ERROR: relation "certificate" does not exist

创建证书的SQL:

CREATE TABLE "Certificate"
(
  id bigint NOT NULL,  
  name text,  
  CONSTRAINT certificate_pk1 PRIMARY KEY (id)  
) 
WITHOUT OIDS;

POJO 类“证书”是:

public class Certificate implements Serializable {
private static final long serialVersionUID = 1L;
private Long id;

private String name;

public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name;
}

public Long getId() {
    return id;
}

public void setId(Long id) {
    this.id = id;
}


public String toString() {
    return "model.Certificate[id=" + id + "]";
}

}

hibernate.cfg.xml 文件:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
  <session-factory>
    <property name="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</property>  
    <property name="hibernate.connection.driver_class">org.postgresql.Driver</property>  
    <property name="hibernate.connection.url">jdbc:postgresql://localhost  /Company</property>  
    <property name="hibernate.connection.username">postgres</property>  
    <property name="hibernate.connection.password">abc123</property>  
    <mapping resource="hibernate.hbm.xml"/>  
  </session-factory>  
</hibernate-configuration> 

Answer 1

这是错误:

PSQLException: ERROR: relation "certificate" does not exist

这是你的 table :

"Certificate"

数据库正在搜索小写的“证书”，您创建了大写的“证书”。

在所有标识符周围使用相同的大小写和双引号，或者只使用小写来简化事情。