Eclipse:定制toString()

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一直对一些问题没有去深的研究,有人说Intellij好,有人说MyEclipse好,有人说Eclipse好,其实萝卜青菜各有所爱,只是看大家使用的习惯或者说公司用什么,你不能左右的时候,请去适合周围的环境,当我们说建立一个类的时候,最后去重写其toString方法,但是我们是否考虑过生成自己喜欢的风格呢? 下面我就来介绍一下使用Eclipse定制生成toString模版

Eclipse官方文档

这里我借鉴了 https://help.eclipse.org/neon/index.jsp?topic=%2Forg.eclipse.jdt.doc.user%2Freference%2Fref-dialog-tostring.htm 文档说明,稍后再来回顾

定制toString模版图解

  • 1.点击toString方法

  • 2.点击编辑按钮

  • 3.点击New按钮设计新的规则

  • 4.定制生成Json格式的规则策略

    {"className":"{object.getClassName}","{member.name()}":"{member.value}","{otherMembers}"}  
    

    点击OK完成,之后需要在toString的页面设置

  • 5.最后一步设置

  • 6.生成效果如下

    	@Override
    	public String toString() {
    		StringBuilder builder = new StringBuilder();
    		builder.append("{\"");
    		if (this.role_id != null) {
    			builder.append("role_id\":\"");
    			builder.append(this.role_id);
    			builder.append("\",\"");
    		}
    		if (this.role_name != null) {
    			builder.append("role_name\":\"");
    			builder.append(this.role_name);
    			builder.append("\",\"");
    		}
    		if (this.role_key != null) {
    			builder.append("role_key\":\"");
    			builder.append(this.role_key);
    			builder.append("\",\"");
    		}
    		if (this.status != null) {
    			builder.append("status\":\"");
    			builder.append(this.status);
    		}
    		builder.append("\"}");
    		return builder.toString();
    	}
    

模版属性简单说明

${object.className} inserts the class name as a simple String
${object.getClassName} inserts a call to this.getClass.getName()
${object.superToString} inserts a call to super.toString()
${object.hashCode} inserts a call to this.hashCode()
${object.identityHashCode} inserts a call to System.identityHashCode(this)
${member.name} inserts the first member's name
${member.name()} inserts the first member's name followed by parenthesis in case of methods
${member.value} inserts the first member's value
${otherMembers} inserts the remaining members. For each member, the template fragment between the first and the last ${member.*} variable is evaluated and appended to the result. The characters between the last ${member.*} and ${otherMembers} define the separator that is inserted between members (${otherMembers} must stand after the last ${member.*} variable).