Spring Mvc TransactionRequiredException：没有事务正在进行中

Question

我使用Spring Mvc应用程序并尝试使用webapp作为ORM。提供了应用程序结构，

Node.prototype.contains()

下面提供了MySQL database ERM文件夹，

下面提供Maven，

我使用JNDI进行依赖关系管理，使用database-context.xml进行数据库连接。 <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.2.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> <context:annotation-config></context:annotation-config> <context:component-scan base-package="mobi.puut.database"> </context:component-scan> <beans profile="production"> <jee:jndi-lookup jndi-name="jdbc/spring" id="dataSource" expected-type="javax.sql.DataSource"> </jee:jndi-lookup> <bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean"> <property name="dataSource" ref="dataSource"></property> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop> </props> </property> <property name="packagesToScan"> <list> <value>mobi.puut.entities</value> </list> </property> </bean> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"></property> </bean> <tx:annotation-driven/> <bean id="exceptionTranslator" class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor"> </bean> </beans> </beans> 文件位于下方，

POJO

User文件位于实体目录中，由Status和User类组成。

下面提供了@Entity @Table(name = "users") public class User { @Id @NotNull @Column(name = "id") @GeneratedValue private int id; @NotNull @NotBlank @Column(name = "name") @Size(min = 5, max = 45, message = "Name must be between 5 and 45 characters.") private String name; public User() { } public User(@Size(min = 5, max = 45, message = "Name must be between 5 and 45 characters.") String name) { this.name = name; } public User(int id, String name) { super(); this.id = id; this.name = name; } public void setId(int id) { this.id = id; } public void setName(String name) { this.name = name; } public int getId() { return id; } public String getName() { return name; } @Override public boolean equals(Object o) { if (this == o) return true; if (!(o instanceof User)) return false; User user = (User) o; if (getId() != user.getId()) return false; return getName().equals(user.getName()); } @Override public int hashCode() { int result = getId(); result = 31 * result + getName().hashCode(); return result; } @Override public String toString() { return "User{" + "id=" + id + ", name='" + name + '\'' + '}'; } } 课程，

Status

下面提供了@Entity @Table(name = "status") public class Status { @Id @NotNull @GeneratedValue @Column(name = "id") private int id; @NotNull @ManyToOne @JoinColumn(name = "id", insertable = false, updatable = false) // private int user_id; private User user; @NotNull @Column(name = "balance") private float balance; @NotNull @Column(name = "address") @Size(min = 5, max = 90, message = "Address must be between 5 and 90 characters.") private String address; @NotNull @Column(name = "transaction") @Size(min = 5, max = 90, message = "Transaction history must be between 5 and 90 characters.") private String transaction; public Status() { } public Status(User user) { this.user = user; } public User getUser() { return user; } public void setUser(User user) { this.user = user; } public Status(User user, @NotNull float balance, @NotNull @Size(min = 5, max = 90, message = "Address must be between 5 and 90 characters.") String address) { this.user = user; this.balance = balance; this.address = address; } public Status(User user, @NotNull float balance, @NotNull @Size(min = 5, max = 90, message = "Address must be between 5 and 90 characters.") String address, @NotNull @Size(min = 5, max = 90, message = "Transaction history must be between 5 and 90 characters.") String transaction) { this.user = user; this.balance = balance; this.address = address; this.transaction = transaction; } // public Status(@NotNull int user_id) { // this.user_id = user_id; // } public Status(float balance, String transaction, String address, int user_id) { // this.user_id = user_id; this.balance = balance; this.address = address; this.transaction = transaction; } public Status(int id, int user_id, float balance, String address, String transaction) { super(); this.id = id; // this.user_id = user_id; this.balance = balance; this.address = address; this.transaction = transaction; } public int getId() { return id; } // public int getUser_id() { // return user_id; // } public float getBalance() { return balance; } public String getAddress() { return address; } public String getTransaction() { return transaction; } public void setId(int id) { this.id = id; } // public void setUser_id(int user_id) { // this.user_id = user_id; // } public void setBalance(float balance) { this.balance = balance; } public void setAddress(String address) { this.address = address; } public void setTransaction(String transaction) { this.transaction = transaction; } @Override public boolean equals(Object o) { if (this == o) return true; if (!(o instanceof Status)) return false; Status status = (Status) o; if (getId() != status.getId()) return false; if (Float.compare(status.getBalance(), getBalance()) != 0) return false; if (!getUser().equals(status.getUser())) return false; if (!getAddress().equals(status.getAddress())) return false; return getTransaction().equals(status.getTransaction()); } @Override public int hashCode() { int result = getId(); result = 31 * result + getUser().hashCode(); result = 31 * result + (getBalance() != +0.0f ? Float.floatToIntBits(getBalance()) : 0); result = 31 * result + getAddress().hashCode(); result = 31 * result + getTransaction().hashCode(); return result; } @Override public String toString() { return "Status{" + "id=" + id + ", user=" + user + ", balance=" + balance + ", address='" + address + '\'' + ", transaction='" + transaction + '\'' + '}'; } } 课程，

public class StatusRowMapper implements RowMapper<Status> {

    @Override
    public Status mapRow(ResultSet rs, int rowNum) throws SQLException {

        User user = new User();
        user.setName(rs.getString("name"));

        Status status = new Status();

        status.setId(rs.getInt("id"));
        status.setBalance(rs.getFloat("balance"));
        status.setAddress(rs.getString("address"));
        status.setTransaction(rs.getString("transaction"));
        status.setUser(user);
        return status;
    }
}

我编写了用于将状态映射到用户的源代码，

@Repository
@Transactional
@Component("bitcoinWwallet")
public class BitcoinWalletDAO {

    @Autowired
    private SessionFactory sessionFactory;

    public Session session(){
        return sessionFactory.getCurrentSession();
    }


    @SuppressWarnings("unchecked")
    public List<Status> getAllWalletStatus() {

        Criteria crit = session().createCriteria(Status.class);
        return crit.list();
    }

}

我写的类和方法来获取所有状态，

JSP

当我打电话从控制器获取Type Exception Report Message Request processing failed; nested exception is javax.persistence.TransactionRequiredException: no transaction is in progress Description The server encountered an unexpected condition that prevented it from fulfilling the request. Exception org.springframework.web.util.NestedServletException: Request processing failed; nested exception is javax.persistence.TransactionRequiredException: no transaction is in progress org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:948) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:827) javax.servlet.http.HttpServlet.service(HttpServlet.java:635) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812) javax.servlet.http.HttpServlet.service(HttpServlet.java:742) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) 中的所有雕像时，我收到错误，

@Transactional

如果我在类BitcoinWalletDAO的顶部注释掉@ExceptionHandler(DataAccessException.class) public String handleDatabaseException(DataAccessException ex) { ex.printStackTrace(); return "error"; } ，我会从错误处理程序中获取数据库连接错误，

SQL

以前，我使用 @SuppressWarnings("unchecked") public List<Status> getAllWalletStatus() { final String sqlString = "SELECT * FROM status"; return jdbc.query(sqlString, new RowMapper<Status>() { public Status mapRow(ResultSet rs, int rowNum) throws SQLException { Status status = new Status(); status.setId(rs.getInt("id")); status.setBalance(rs.getFloat("balance")); status.setTransaction(rs.getString("transaction")); status.setAddress(rs.getString("address")); // status.setUser_id(rs.getInt("user_id")); return status; } }); } 来获取数据库中的所有雕像，并且工作正常，

TABLE1.name , TABLE1.description, TABLE2.category.

如果需要，我可以提供更多信息。如何解决这个问题？