java list深拷贝

可以通过将list转成json，在把json转成list即可

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List<SysUser> a = Lists.newArrayList();        SysUser u1 =new SysUser();        u1.setUserId(1L);        a.add(u1);        List<SysUser> b = JSONUtil.toBean(JSONUtil.toJsonStr(a), new TypeReference<List<SysUser>>() {        }, true);        System.err.println(a);//com.dongqiimi.common.core.domain.entity.SysUser@4fb64261        System.err.println(b);//com.dongqiimi.common.core.domain.entity.SysUser@401e7803

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1 2	System.err.println(a);//com.dongqiimi.common.core.domain.entity.SysUser@4fb64261 System.err.println(b);//com.dongqiimi.common.core.domain.entity.SysUser@401e7803