解决 json hibernate 死循环 的 问题

两种简单的解决方式：

fastjson

	@JSONField(serialize=false) 
	@OneToMany(cascade = CascadeType.ALL, 
			targetEntity=TDepartment.class,
			fetch = FetchType.LAZY, mappedBy = "pdemartnemt")
	public List getDeparts() {
		return departs;
	}

Gson

	@JSON(serialize=false)
	@OneToMany(cascade = CascadeType.ALL, 
			targetEntity=TDepartment.class,
			fetch = FetchType.LAZY, mappedBy = "pdemartnemt")
	public List getDeparts() {
		return departs;
	}

jsonConfig

        JsonConfig jsonConfig = new JsonConfig();
        jsonConfig.setIgnoreDefaultExcludes(false); //设置默认忽略 
        jsonConfig.setCycleDetectionStrategy(CycleDetectionStrategy.LENIENT);//设置循环策略为忽略
        jsonConfig.setExcludes(new String[] {"staffs"});//将所需忽略字段加到数组中