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去重方法一：

package com.hzbank.counter.bean;import com.fasterxml.jackson.annotation.JsonFormat;public class ReportFormsDialogue {    private String name;    private String usernameId;    public String getName() {		return name;	}	public void setName(String name) {		this.name = name;	}	public String getUsernameId() {		return usernameId;	}	public void setUsernameId(String usernameId) {		this.usernameId = usernameId;	}    @Override    public boolean equals(Object obj) {        ReportFormsDialogue s=(ReportFormsDialogue)obj;        return usernameId.equals(s.usernameId) && name.equals(s.name);    }    @Override    public int hashCode() {        String in = usernameId + name;        return in.hashCode();    }}

public class Test {   public static void main(String[] args) { List
   
     stu = new ArrayList
    
     (); stu.add(new ReportFormsDialogue("1","yi")); stu.add(new ReportFormsDialogue("3","san")); stu.add(new ReportFormsDialogue("3","san")); stu.add(new ReportFormsDialogue("2","er")); stu.add(new ReportFormsDialogue("2","er")); //set集合保存的是引用不同地址的对象 Set
     
       ts = new HashSet
      
       (); ts.addAll(stu);   for (ReportFormsDialogue reportFormsDialogue: ts) {  System.out.println(reportFormsDialogue. getName()+"-"+reportFormsDialogue.getUsernameId()); } }}
      
     
    
   

第二种方法：

@Select(value = {            ""    })    List
   
     getTotalChartByAll(@Param("name")String name,@Param("usernameId")String usernameId);
   

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