小编use*_*481的帖子

我的工作SpringMVC,Hibernate&JSON但我得到这个错误.

HTTP Status 500 - Could not write JSON: No serializer found for class org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationConfig.SerializationFeature.FAIL_ON_EMPTY_BEANS) ) 

请检查下面的实体

    @Entity
@Table(name="USERS")
public class User {

    @Id
    @GeneratedValue
    @Column(name="USER_ID")
    private Integer userId;

    @Column(name="USER_FIRST_NAME")
    private String firstName;

    @Column(name="USER_LAST_NAME")
    private String lastName;


    @Column(name="USER_MIDDLE_NAME")
    private String middleName;

    @Column(name="USER_EMAIL_ID")
    private String emailId;

    @Column(name="USER_PHONE_NO")
    private Integer phoneNo;

    @Column(name="USER_PASSWORD")
    private String password;

    @Column(name="USER_CONF_PASSWORD")
    private String  confPassword;

    @Transient
    private String token;

    @Column(name="USER_CREATED_ON") …

我是Maven的新手.我正在尝试为springMVC + Hiberante创建maven项目但是我遇到了很多错误..任何人都可以解决我的问题请查看我的pom.xml以下

<?xml version="1.0" encoding="UTF-8"?><project>
    <modelVersion>4.0.0</modelVersion>
    <groupId>Spring3HibernateMaven</groupId>
    <artifactId>Spring3HibernateMaven</artifactId>
    <packaging>war</packaging>
    <version>0.0.1-SNAPSHOT</version>
    <description></description>
    <build>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.3.2</version>

                <configuration>
                    <source>1.5</source>
                    <target>1.5</target>
                </configuration>
            </plugin>

            <!--  <plugin>
               <artifactId>maven-war-plugin</artifactId>
               <version>2.0</version>

             </plugin> -->
        </plugins>
    </build>
    <dependencies>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>${org.springframework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${org.springframework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${org.springframework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${org.springframework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>${org.springframework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>4.1.9.Final</version>
        </dependency>

        <dependency>
            <groupId>taglibs</groupId>
            <artifactId>standard</artifactId>
            <version>1.1.2</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.1.2</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.10</version> …

我正在使用SpringMVC,我将数据从ajax传递给控制器​​,但我的控制器中有空值,请检查下面的代码

function searchText()
{
   var sendData = {
    "pName" : "bhanu",
     "lName" :"prasad"
   }
  $.ajax({
type: "POST",
 url: "/gDirecotry/ajax/searchUserProfiles.htm,
    async: true,
    data:sendData,
    success :function(result)
    {
    }
 }

MyControllerCode

         RequestMapping(value="/gDirecotry/ajax/searchUserProfiles.htm",method=RequestMethod.POST)

       public  @ResponseBody String  getSearchUserProfiles(HttpServletRequest request)
       {
         String pName = request.getParameter("pName");
         //here I got null value
       }

任何人帮助我

我正在与Hibernet和Spring合作,这很好......但我有些疑惑

1)为什么弹簧范围默认是单身？有什么理由吗？

2)我可以在Hibernate实体中编写final varible吗？示例:

@Entity
public class Emp {
  @Id
  private Long id;
  final private String panNo;
}

我可以像上面那样写

3)静态变量可以Seracizable？

嗨,我是Spring MVC的新手,我想调用从一个控制器到另一个控制器的方法,我该怎么做.请检查下面的代码

@Controller

    @RequestMapping(value="/getUser")
    @ResponseBody
    public User getUser()
    {
        User u = new User();
        //Here my dao method is activated and I wil get some userobject
       return u;
    }
   @Controller

    @RequestMapping(value="/updatePSWD")
    @ResponseBody
    public String updatePswd()
    {
        here I want to call above controller method and 
       I want to update that user password here.
       how can  I do that 
        return "";
    }

任何人帮助我.

我正在使用Jdbc和CloudSql我按照本教程https://developers.google.com/appengine/docs/java/cloud-sql/当我com.mysql.jdbc.GoogleDriver通过使用加载此类时 class.forName("com.mysql.jdbc.GoogleDriver");

我有

ClassNotFoundException 

谁能告诉我在哪里下载这个罐子？