window.cnblogsConfig = {
blogUser: 'MoYu',
blogAvatar: 'https://gitee.com/MoYu-zc/picgo/raw/master/img/20210213094450.jpg',
blogStartDate: '2020-02-09',
webpageTitleOnblur: '(o゚v゚)ノ Hi,Back',
webpageTitleOnblurTimeOut: 500,
webpageTitleFocus: '(*´∇`*) 欢迎回来!',
webpageTitleFocusTimeOut: 1000,
webpageIcon: "https://gitee.com/MoYu-zc/picgo/raw/master/img/20210213094450.jpg",
enable: true, // 是否开启日/夜间模式切换按钮
auto: { // 自动切换相关配置
enable: false, // 开启自动切换
dayHour: 7, // 日间模式开始时间,整数型,24小时制
nightHour: 20 // 夜间模式开始时间,整数型,24小时制
}
switchDayNight: {
enable: true,
auto: {
enable: true
}
},
progressBar: {
id : 'top-progress-bar', // 请勿修改该值
color : '#77b6ff',
height : '2px',
duration: 0.2,
},
loading: {
rebound: {
tension: 16,
friction: 5,
},
spinner: {
id: 'spinner',
radius: 90,
sides: 3,
depth: 4,
colors: {
background: '#f0f0f0',
stroke: '#272633',
base: null,
child: '#272633',
},
alwaysForward: true, // When false the spring will reverse normally.
restAt: 0.5, // A number from 0.1 to 0.9 || null for full rotation
renderBase: false,
}
},
homeTopAnimationRendered: true,
homeTopAnimation: {
radius: 15,
density: 0.2,
color: 'rgba(255,255,255, .2)', // 颜色设置,“random” 为随机颜色
clearOffset: 0.3,
},
essayTopAnimationRendered: true,
essayTopAnimation: {
triW : 14,
triH : 20,
neighbours : ["side", "top", "bottom"],
speedTrailAppear : .1,
speedTrailDisappear : .1,
speedTriOpen : 1,
trailMaxLength : 30,
trailIntervalCreation : 100,
delayBeforeDisappear : 2,
colorsRandom: false, // v1.2.4 是否开启随机颜色
colors: [
'#96EDA6', '#5BC6A9',
'#38668C', '#374D84',
'#BED5CB', '#62ADC6',
'#8EE5DE', '#304E7B'
]
},
homeTopImg: [
"https://cdn.jsdelivr.net/gh/BNDong/Cnblogs-Theme-SimpleMemory@master/img/webp/home_top_bg.webp",
"https://cdn.jsdelivr.net/gh/BNDong/Cnblogs-Theme-SimpleMemory@master/img/webp/home_top_bg.webp"
],
homeBannerTextType: "one",
essayTopImg: [
"https://cdn.jsdelivr.net/gh/BNDong/Cnblogs-Theme-SimpleMemory@master/img/webp/nothome_top_bg.webp",
"https://cdn.jsdelivr.net/gh/BNDong/Cnblogs-Theme-SimpleMemory@master/img/webp/nothome_top_bg.webp",
"https://gitee.com/MoYu-zc/picgo/raw/master/img/20210208190902.jpg",
"https://gitee.com/MoYu-zc/picgo/raw/master/img/20210208190954.jpg",
],
codeMaxHeight: true,
codeLineNumber: true,
essayCode: {
fontFamily: "'Ubuntu Mono',monospace", // 代码框字体
fontSize: "14px" // 代码框字体大小
},
}
source is null for getProperty(null, "name")
这个问题的发生一般是在 Mapper.xml
的 sql语句中出错。
我在项目中使用到了,用到了XML中的判断条件查询方式,代码如下:
<if test="employee.name != null and employee.name != ''">
AND e.`name` LIKE CONCAT( '%', #{employee.name}, '%' )
</if>
上述语句的简单来说,当传过来的employee.name
不等于 null
并且不等于 ''
,就按这个条件查询,这时候运行项目,报错:
source is null for getProperty(null, "name")
这时候可能有两个原因:
一、你并没有对应的对象参数
你可以查看方法参数中是否有对应的对象参数
;
例如:我这个方法中要查看是否有 employee
// 错误
List<Employee> getEmployee();
// 正确
List<Employee> getEmployee(Employee employee);
二、有对应对象,但是对象传值为NULL
这种情况可以在外层加入判断:
<if test="employee != null and employee != '' ">
<if test="employee.name != null and employee.name != ''">
AND e.`name` LIKE CONCAT( '%', #{employee.name}, '%' )
</if>
</if>
这样,没有传入任何参数时,也不会报错了
个人博客为:
MoYu's Github Blog
MoYu's Gitee Blog
posted @
2021-05-07 23:14
MoYu-zc
阅读(
355)
评论()
编辑
收藏
举报