有时候我们需要这样一种应用场景，让用户输入字符串列表，提交到后台。

这个时候我们可以选择标签Tag输入用法--Bootstrap-tagsinput。

效果图

我们在之前的文章中已经在SpringMVC基础框架的基础上应用了BootStrap的后台框架，在此基础上记录?标签Tag输入用法。

应用bootstrap模板

基础项目源码下载地址为:

SpringMVC+Shiro+MongoDB+BootStrap基础框架

我们在基础项目中已经做好了首页index的访问。
现在就在index.jsp页面和index的路由Controller上做修改，实现 ?标签Tag输入用法。

下载引用插件

下载地址:

http://download.csdn.net/detail/q383965374/9880926

下载解压后得到JS文件，放入项目的静态资源目录中。如图:

在页面上引用使用代码:

<script type="text/javascript"
        src="/res/bootstrap-tagsinput/bootstrap-tagsinput.js"></script>

辅助实体代码

Pic.java

package com.test.domain.entity;

import java.util.List;


public class Pic {
	private String id;
	private String name;
	private String description;
	private List<String> tags;//标签
	public String getId() {
		return id;
	}
	public void setId(String id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getDescription() {
		return description;
	}
	public void setDescription(String description) {
		this.description = description;
	}
	public List<String> getTags() {
		return tags;
	}
	public void setTags(List<String> tags) {
		this.tags = tags;
	}
	
	
}

JSP页面代码

index.jsp

<%@ include file="./include/header.jsp"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<style>
/*bootstrap-tagsinput 样式*/
.bootstrap-tagsinput {
  background-color: #fff;
  border: 1px solid #ccc;
  box-shadow: inset 0 1px 1px rgba(0,0.075);
  display: inline-block;
  padding: 5px 6px;
  color: #555;
  vertical-align: middle;
  border-radius: 4px;
  width: 100%;
  line-height: 22px;
  cursor: text;
}

.bootstrap-tagsinput input {
  border: none;
  box-shadow: none;
  outline: none;
  background-color: transparent;
  padding: 0;
  margin: 0;
  width: auto !important;
  max-width: inherit;
}

.bootstrap-tagsinput input:focus {
  border: none;
  box-shadow: none;
}

.bootstrap-tagsinput .tag {
  margin-right: 2px;
  color: white;
  font-size: 100%;
}

.bootstrap-tagsinput .tag [data-role="remove"] {
  margin-left: 8px;
  cursor: pointer;
}

.bootstrap-tagsinput .tag [data-role="remove"]:after {
  content: "x";
  padding: 0px 2px;
}

.bootstrap-tagsinput .tag [data-role="remove"]:hover {
  box-shadow: inset 0 1px 0 rgba(255,255,0.2),0 1px 2px
    rgba(0,0.05);
}

.bootstrap-tagsinput .tag [data-role="remove"]:hover:active {
  box-shadow: inset 0 3px 5px rgba(0,0.125);
}
</style>

        <div id="page-wrapper">
            <div id="page-inner">


                <div class="row">
                    <div class="col-md-12">
                        <h1 class="page-header">
                            标签Tag用法 <small>后台List接收</small>
                        </h1>
                    </div>
                </div>
                <!-- /. ROW  -->

     <form class="form-horizontal" id="base">
                 <input type="text" value="${pic.id}" id="id" name="id" hidden/>
                <div class="form-group">
                    <label for="name" class="col-sm-2 control-label">名称:</label>
                    <div class="col-sm-10">
                        <input type="text" class="form-control" id="name" name="name" value="${pic.name}"
                               placeholder="">
                    </div>
                </div>
                <div class="form-group ">
                    <label class="col-sm-2 control-label">描述:</label>
                    <div class="col-sm-10">
                        <textarea id="description" name="description" class="form-control"
                                  rows="8">${pic.description}</textarea>
                    </div>
                </div>
              
                <div class="form-group">
                    <label for="tags" class="col-sm-2 control-label">标签:</label>
                    <div class="col-sm-6 ">
                        <input type="text" class="form-control" id="tags" name="tags"
                               data-role="tagsinput" placeholder="输入标签Enter确认"/>
                    </div>
                </div>
                <div class="form-group">
                    <div class="col-sm-6 col-sm-offset-2">
                        <button type="button" class="btn btn-default cancel"
                                data-dismiss="modal">取消
                        </button>
                        <button type="button" class="btn btn-primary save"
                                data-loading-text="Saving...">确认
                        </button>
                    </div>
                </div>
           </form>  
                <!-- /. ROW  -->
            </div>
            <!-- /. PAGE INNER  -->
        </div>
        <!-- /. PAGE WRAPPER  -->

    

        
        


 <%@ include file="./include/footer.jsp"%>
<script type="text/javascript"
        src="/res/bootstrap-tagsinput/bootstrap-tagsinput.js"></script>
<script type="text/javascript">
/**
 * jQuery form 扩展获取数据
 */
$.fn.formGet = function(opts) {
opts = $.extend({},opts);
var data = {},els = opts.formGroup ? this.find('[form-group="' + opts.formGroup + '"]') : this.find('[name]');
if (!els || !els.length) {
  return data;
}

var fnSetValue = (function(emptyToNull) {
  return emptyToNull ? function(obj,propertyChain,value,allowMulti) {
    value !== '' && _fnObjectSetPropertyChainValue(obj,allowMulti)
  } : _fnObjectSetPropertyChainValue
})(opts.emptyToNull);

els.each(function() {
  var $this = $(this),type = $this.attr('type'),name = $this.attr('name'),// 可能为属性链
    tag = this.tagName.toLowerCase();
  if (tag == 'input') {
    if (type == 'checkbox') {
      var v = $(this).val();
      if (v == 'on' || !v) {
        fnSetValue(data,name,$(this).prop('checked'));
      } else {
        $(this).prop('checked') && fnSetValue(data,v,true);
      }
    } else if (type == 'radio') {
      this.checked && fnSetValue(data,$this.val());
    } else {
      fnSetValue(data,$this.val());
    }
  } else if ('|select|textarea|'.indexOf('|' + tag + '|') > -1) {
    fnSetValue(data,$this.val());
  } else {
    fnSetValue(data,$.trim($this.text()));
  }
});
return data;
};


/**  
 * 内部私有方法  
 */  
var _fnObjectGetPropertyChainValue = function(obj,propertyChain) {  
  /* 获取属性链的值 */  
  if (!obj) return;  
  if (!propertyChain) return obj;  
  var property,chains = propertyChain.split('.'),i = 0,len = chains.length;  
  for (;  
    (property = chains[i]) && i < len - 1; i++) {  
    if (!obj[property]) return;  
    obj = obj[property];  
  }  
  return obj[property];  
},_fnObjectSetPropertyChainValue = function(obj,allowMulti) {  
  /* 设置属性链的值 */  
  if (!obj || !propertyChain) return;  
  var property,chainObj = obj,len = chains.length;  
  for (;  
    (property = chains[i]) && i < len - 1; i++) {  
    if (!chainObj[property]) {  
      chainObj[property] = {};  
    }  
    chainObj = chainObj[property];  
  }  
  // 改进版：checkbox的多选可以组合为数组  
  if (!allowMulti || chainObj[property] === undefined) {  
    chainObj[property] = value;  
  } else {  
    var pv = chainObj[property];  
    if ($.isArray(pv)) {  
      pv.push(value);  
    } else {  
      chainObj[property] = [pv,value];  
    }  
  }  
  return obj;  
};  
  


//标签tags的赋值
<c:if test="${pic.tags!=null&&pic.tags.size()>0}">
var tag = "<c:forEach items="${pic.tags}" var="item">${ item},</c:forEach>";
console.log(tag);
$('input[data-role="tagsinput"]').tagsinput('removeAll');
$('input[data-role="tagsinput"]').tagsinput('add',tag);
</c:if>


  
    $(document).ready(function () {
        /*END-保存表单-END*/
        $('button.save').on('click',function () {
            debugger;
            var data = $('#base').formGet();
            data.tags = data.tags.split(',');
            $.ajax({
                type: "POST",url: "/pic/save",contentType: "application/json",data: JSON.stringify(data),success: function (result) {
                    console.log(result);
                    if (!result.code) 
                    {
                        alert(result.data);
                    } else {
                        alert(result.msg);
                    }
                },error: function (result) {
                    alert("出错了，请稍后重试");
                }
            });
        });
    });

</script>


</body>

</html>

注意给tags赋值时，和获取时都需要使用js处理一下。注意引用c标签。

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

js处理值的代码:

绑定

//标签tags的赋值
<c:if test="${pic.tags!=null&&pic.tags.size()>0}">
var tag = "<c:forEach items="${pic.tags}" var="item">${ item},tag);
</c:if>

获取

var data = $('#base').formGet();
            data.tags = data.tags.split(',');

还有需要引入样式

<style>
/*bootstrap-tagsinput 样式*/
.bootstrap-tagsinput {
  background-color: #fff;
  border: 1px solid #ccc;
  box-shadow: inset 0 1px 1px rgba(0,0.125);
}
</style>

后台接收代码

indexcontroller.java

package com.test.web.controller;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.test.domain.entity.Pic;
import com.test.util.JSONResult;

/**
 * IndexController
 * 
 * 
 */
@Controller
public class IndexController {

	@RequestMapping("/")
	public String index(Model model) throws IOException {
          model.addAttribute("hostname","http://127.0.0.1:8080/");
          Pic pic=new Pic();
          List<String> tags=new ArrayList<String>();
          tags.add("足球");
          tags.add("棒球");
          tags.add("篮球");
          pic.setTags(tags);
          model.addAttribute("pic",pic);
		return "/index";
	}

	
	@RequestMapping("/pic/save")
	@ResponseBody
	public JSONResult saveMigrateLine(@RequestBody Pic pic) {
		//保存pic记录
		//int result = save(pic);
		int result =1;
		return result > 0 ? JSONResult.success("保存成功")
				:JSONResult.error("保存失败!");
	}
}