JasperReport使用自定义的JRDataSource创建报表

  前面介绍了使用Collection of JavaBeans方式创建报表,其实我们还可以通过自定义实现JRDataSource接口的方式,为了方便此处直接继承JRBeanCollectionDataSource,同样的此处也需要增加一个静态工厂方法

package org.example.datasource;

import net.sf.jasperreports.engine.data.JRBeanCollectionDataSource;
import org.example.entity.User;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

public class CustomerBeanCollectionDataSource extends JRBeanCollectionDataSource {
    public CustomerBeanCollectionDataSource(Collection<?> beanCollection) {
        super(beanCollection);
    }

    public CustomerBeanCollectionDataSource(Collection<?> beanCollection, boolean isUseFieldDescription) {
        super(beanCollection, isUseFieldDescription);
    }

    public static CustomerBeanCollectionDataSource getInstance(){
        List<User> list = new ArrayList<>();
        for(int i=0;i<10;i++){
            User user = new User();
            user.setName("AA"+i);
            user.setAge(20+i);
            user.setSex("男");
            user.setAddress("address"+i);
            list.add(user);
        }
        return new CustomerBeanCollectionDataSource(list);
    }
}

  此处用到了前面定义的User,其他步骤和上面类似,就不过多讲述了,具体参见 https://www.cnblogs.com/xiupan/p/13334986.html

posted @ 2020-07-18 15:05  小小的暗影  阅读(1304)  评论(0编辑  收藏  举报