微信公众平台开发(5) 微信客服消息接口

API地址：http://mp.weixin.qq.com/wiki/7/12a5a320ae96fecdf0e15cb06123de9f.html

发送消息请求接口地址：https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token=ACCESS_TOKEN

微信公众号向用户发送消息，根据类型可以分为文本消息、图片消息、语言消息、视频消息、音乐消息、图文消息。这里已文本消息为例，发送其他类型消息，需先将消息文件上传至公众号。

创建一个base实体：CustomMsg，给CustomMsg类一个空的toJSON方法。具体消息实体继承CustomMsg即可。

//所有消息类型父类
public class CustomMsg {
    private String touser;
    private MsgTypeEnum msgtype;//消息类型
    
    //省略getter、setter方法
    
    public String toJSON(){
        return "";
    }
}

//消息类型枚举
public enum MsgTypeEnum {
    TEXT("文本","green","text"),
    IMAGE("图片","green","image"),
    VOICE("语言","green","voice"),
    VIDEO("视频","green","video"),
    MUSIC("音乐","green","music"),
    NEWS("图文","green","news"),
    WXCARD("卡券","green","wxcard");
    
    private String label;
    private String color;
    private String value;
    
    private MsgTypeEnum(String label,String color,String value) {
        this.setLabel(label);
        this.setColor(color);
        this.setValue(value);
    }
    
    //省略getter、setter方法
}

文本消息实体继承CustomMsg,重写toJSON方法

public class TextMsg extends CustomMsg{
    private String content;
    
    //指定消息类型
    public TextMsg(){
        this.setMsgtype(MsgTypeEnum.TEXT);
    }
    
    public String getContent() {
        return content;
    }

    public void setContent(String content) {
        this.content = content;
    }
    
    //重写父类方法
    public String toJSON() {  
        StringBuffer buffer = new StringBuffer();  
        buffer.append("{");  
        buffer.append(String.format(""touser":"%s"", this.getTouser())).append(",");  
        buffer.append(String.format(""msgtype":"%s"", this.getMsgtype().getValue())).append(",");  
        buffer.append(String.format(""%s":{",this.getMsgtype().getValue()));  
        
        buffer.append(String.format(""content":"%s"", this.content));
        
        buffer.append("}");  
        buffer.append("}");  
        return buffer.toString();  
    }  
}

发送消息,httpsRequestToJsonObject在前面的工具类中

TextMsg textMsg = new TextMsg();
        String content = "hello! custom message!";
        textMsg.setContent(content);
        textMsg.setTouser("oRKn_jnBnfKC7bqU6YBPb-3FS8DE");
        JSONObject jsonObject = customMessageService.sendCustomMsg(textMsg);

    public  JSONObject  sendCustomMsg(CustomMsg customMsg){  
        
        //获取token
        String token = accessTokenService.getAccessToken();
          
        String requestUrl = "https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token=ACCESS_TOKEN";
        
        requestUrl=requestUrl.replace("ACCESS_TOKEN", token);  
        
        if (log.isDebugEnabled()) {
            log.debug(customMsg.toJSON());
        }
        
        JSONObject jsonObject = CommonUtil.httpsRequestToJsonObject(requestUrl, "POST", customMsg.toJSON(),false);  
        
        return jsonObject;
          
          
    } 

实现效果：