java - 使用spring的@Value注解出错

Question

容器启动的时候出错 配置文件如下: 报错信息如下: {代码...} 怎么解决呢?

PHP中文网 · Answer

1. First of all, make sure that the location of your properties is correct. If you are running a single test, it is best to make sure that it is also in the test path.

2. If the configuration file is confirmed to be OK, spring will have a tool class NumberUtils to handle it. NumberUtils来处理。

            return (T) (isHexNumber(trimmed) ? Byte.decode(trimmed) : Byte.valueOf(trimmed));
        }
        else if (targetClass.equals(Short.class)) {
            return (T) (isHexNumber(trimmed) ? Short.decode(trimmed) : Short.valueOf(trimmed));
        }
        else if (targetClass.equals(Integer.class)) {
            return (T) (isHexNumber(trimmed) ? Integer.decode(trimmed) : Integer.valueOf(trimmed));
        }

会把string转换成Intger类型，如果还是不行的话，可以试试用SPEL

"#{T(java.lang.Integer).parseInt('${maxPic}')}"

It will convert the string into Intger type. If it still doesn’t work, you can try to use the SPEL statement to force the conversion🎜 rrreee

PHPz · Answer

Failed to convert value of type 'java.lang.String' to required type 'int'; nested exception is java.lang.NumberFormatException: For input string: "${maxPic}"

This error is so obvious. . . When init bean, spring automatically converts and assigns macPic parameters, but the conversion from String to int is abnormal

ringa_lee · Answer

exception is java.lang.NumberFormatException: For input string: "${maxPic}", did you write maxPic with quotation marks and reported an error

迷茫 · Answer

int replaced by String
private　String maxPic.

java - 使用spring的@Value注解出错

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