[英]How to extract double value from a string in java
Below is total string i have but i want to extract 31.0, could someone help on this.下面是我拥有的全部字符串,但我想提取 31.0,有人可以帮忙吗?
String Inseam = {"value":"30inch"-33inch" Shorts","key":"31.0"} String Inseam = {"value":"30inch"-33inch" 短裤","key":"31.0"}
I need 31.0 as an output to use the value some where我需要 31.0 作为 output 才能在某些地方使用该值
<dependency>
<groupId>com.jayway.jsonpath</groupId>
<artifactId>json-path</artifactId>
<version>2.4.0</version>
</dependency>
JsonPath.parse(Inseam).read("$.key");
Full example:完整示例:
public static void main(String[] args) {
String inseam = "{\"value\":\"30inch\", \"key\":\"31.0\"}";
String keyValue = JsonPath.parse(inseam).read("$.key");
System.out.println(keyValue);
}
Output: Output:
31.0
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