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基础运算

变量引用： #name 从当前上下文件中取变量 name 算数运算： 加+, 减-, 乘*, 除/, 求余%, 幂^逻辑运算： ==, !=, >, >=, <, <=, between三目运算： 2>1 ? 真 : 假正   则：  str matches regex 例："'123' matches '\d{3}'" 结果 true

调用对象、方法

解析html为doc对象，并取出title内容

T(org.jsoup.Jsoup).parse(#htmlStr).getElementsByTag("title").text()

解析url为doc对象，并取出title内容

T(org.jsoup.Jsoup).connect('https://blog.csdn.net/jx520/article/details/114948684').get().getElementsByTag("title").text()

示例代码

演示了：正则、字符串的substring、indexOf

import org.junit.Test;import org.springframework.expression.EvaluationContext;import org.springframework.expression.Expression;import org.springframework.expression.ExpressionParser;import org.springframework.expression.spel.standard.SpelExpressionParser;import org.springframework.expression.spel.support.SimpleEvaluationContext;import org.springframework.expression.spel.support.StandardEvaluationContext;import org.springframework.util.Assert;public class SpELTest {
           String str = "
   
    
     
      湖边的小屋遗址
      
       那唐僧内眼凡胎不识妖怪，反护着它……
       
";    /** 正则 */    @Test    public void spelTest(){
           String regex = ".*唐僧.*";        String condition = "#result matches #expect" ;        EvaluationContext context = SimpleEvaluationContext.forReadWriteDataBinding().build();        context.setVariable("result", str);        context.setVariable("expect", regex);        ExpressionParser parser = new SpelExpressionParser();        Expression expression = parser.parseExpression(condition);        Boolean value = expression.getValue(context, Boolean.class);        System.out.println("=========================================================");        System.out.println("result: " + str);        System.out.println("expect: " + regex);        System.out.println("表达式: " + expression.getExpressionString());        System.out.println("结  果: " + value);                Assert.isTrue(value, "应该匹配正则： " + regex);    }    /** 方法 substring 需要 StandardEvaluationContext */    @Test    public void spelTestSubstring(){
           String expect = "湖边的小屋遗址";        String condition = "#result.substring(92, 99) == #expect" ;                ExpressionParser parser = new SpelExpressionParser();        EvaluationContext context = new StandardEvaluationContext();        context.setVariable("result", str);        context.setVariable("expect", expect);        Expression expression = parser.parseExpression(condition);        Boolean value = expression.getValue(context, Boolean.class);                System.out.println("=========================================================");        System.out.println("result: " + str);        System.out.println("expect: " + expect);        System.out.println("表达式: " + expression.getExpressionString());        System.out.println("结  果: " + value);        Assert.isTrue(value, ".substring(92, 99) 应该等于： " + expect);    }            /** 方法 indexOf 需要 StandardEvaluationContext */    @Test    public void spelTestIndexOf(){
           Integer expect = 150;        String condition = "#result.indexOf('反护着它') == #expect";                ExpressionParser parser = new SpelExpressionParser();        EvaluationContext context = new StandardEvaluationContext();        context.setVariable("result", str);        context.setVariable("expect", expect);        Expression expression = parser.parseExpression(condition);        Boolean value = expression.getValue(context, Boolean.class);        System.out.println("=========================================================");        System.out.println("result: " + str);        System.out.println("expect: " + expect);        System.out.println("表达式: " + expression.getExpressionString());        System.out.println("结  果: " + value);        Assert.isTrue(value, ".indexOf('反护着它') 应该等于： " + expect);    }    }
      
     
    
   

参考资料

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