1. 添加组件 Active Choices Plug-in

如jenkins无法联网，可在以下两个地址中下载插件，然后放到/home/jenkins/.jenkins/plugin下面重启jenkins即可

Active Choices

Active Choices | Jenkins plugin

2. 效果如下：

sharding为空时，sharding_info和copy_info不显示

sharding等于2时，显示sharding等于2时的值

3. 具体配置及脚本如下：

在JOB 配置界面添加参数

Groovy Script脚本如下 ：

if (sharding=="2") {return """<input name="value" type="text" id="VALUE" class="setting-input" value="this is 2"><img src="error/image/url" style="display: none;" onerror='document.getElementById("VALUE").closest(".form-group").style.display=""'>"""
}else if (sharding=="4") {return """<input name="value" type="text" id="VALUE" class="setting-input" value="this is 4"><img src="error/image/url" style="display: none;" onerror='document.getElementById("VALUE").closest(".form-group").style.display=""'>"""
}else {return """<input name="value" type="text" id="VALUE" class="setting-input" value=""><img src="error/image/url" style="display: none;" onerror='document.getElementById("VALUE").closest(".form-group").style.display="none"'>"""
}