我的course实体类如下：

package com.fanyu.course.entity;

/**
course实体类
 */
public class Course {
private Integer id;
    private Integer courseId;
    private String courseName;
    private Integer valid;

    public Integer getId() {
return id;
    }

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

public Integer getCourseId() {
return courseId;
    }

public void setCourseId(Integer courseId) {
this.courseId = courseId;
    }

public String getCourseName() {
return courseName;
    }

public void setCourseName(String courseName) {
this.courseName = courseName;
    }

public Integer getValid() {
return valid;
    }

public void setValid(Integer valid) {
this.valid = valid;
    }


}

启动Tomcat运行：

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