获取org.mule.api.expression.ExpressionRuntimeException

在mule中运行以下代码段时获取org.mule.api.expression.ExpressionRuntimeException

我在var1和var2中分别将值存储为[message.inboundProperties.http.query.params.value1]和[message.inboundProperties.http.query.params.value2]

我试图返回传递的参数之和

import java.lang.Integer;

int firstValue = Integer.pareseint(flowVars.var1);
int secondValue =Integer.pareseint(flowVars.var2);
int result =  firstValue + secondValue;
payload =  result

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更新：我已经解决了这个错误，但是现在它正在连接输入，而不是添加它们。其他操作符，如*、/、-，等工作正常。

您可以尝试使用Mule表达式作为：#[2+4]

您可以使用java transformer组件以以下方式进行尝试。这对我有用

下面是主mule xml配置文件

<?xml version="1.0" encoding="UTF-8"?>

<mule xmlns:http="http://www.mulesoft.org/schema/mule/http" xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:doc="http://www.mulesoft.org/schema/mule/documentation"
    xmlns:spring="http://www.springframework.org/schema/beans" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-current.xsd
http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/current/mule.xsd
http://www.mulesoft.org/schema/mule/http http://www.mulesoft.org/schema/mule/http/current/mule-http.xsd">
    <http:listener-config name="HTTP_Listener_Configuration" host="0.0.0.0" port="8081" doc:name="HTTP Listener Configuration"/>
    <flow name="tryoutFlow">
        <http:listener config-ref="HTTP_Listener_Configuration" path="/bill" allowedMethods="GET" doc:name="HTTP"/>
        <set-variable variableName="var1" value="#[message.inboundProperties.'http.query.params'.value1]" doc:name="var1"/>
        <set-variable variableName="var2" value="#[message.inboundProperties.'http.query.params'.value2]" doc:name="var2"/>
        <custom-transformer class="org.mule.transformar.Addition" returnClass="java.lang.Integer doc:name="Java">
        </custom-transformer>
    </flow>
</mule>

---

您做的一切都是对的，但是很少有语法错误，比如

Integer.pareseint

而不是

Integer.parseInt

请参考以下流程，使其以简单的方式工作：-

 <http:listener-config name="HTTP_Listener_Configuration" host="0.0.0.0" port="8081" doc:name="HTTP Listener Configuration"/>
    <flow name="testFlow">
        <http:listener config-ref="HTTP_Listener_Configuration" path="/test" doc:name="HTTP"/>
        <set-variable doc:name="Variable" value="#[message.inboundProperties.'http.query.params'.value1]" variableName="var1"/>
        <set-variable doc:name="Variable" value="#[message.inboundProperties.'http.query.params'.value2]" variableName="var2"/>
        <expression-component doc:name="Expression"><![CDATA[
import java.lang.Integer;

int firstValue = Integer.parseInt(flowVars.var1);
int secondValue = Integer.parseInt(flowVars.var2);
int result =  firstValue + secondValue;
payload =  result]]></expression-component>
        <object-to-string-transformer doc:name="Object to String"/>
        <logger message="#['Total '+message.payload]" level="INFO" doc:name="Logger"/>
    </flow>

要测试的url为：-

 <http:listener-config name="HTTP_Listener_Configuration" host="0.0.0.0" port="8081" doc:name="HTTP Listener Configuration"/>
    <flow name="testFlow">
        <http:listener config-ref="HTTP_Listener_Configuration" path="/test" doc:name="HTTP"/>
        <set-variable doc:name="Variable" value="#[message.inboundProperties.'http.query.params'.value1]" variableName="var1"/>
        <set-variable doc:name="Variable" value="#[message.inboundProperties.'http.query.params'.value2]" variableName="var2"/>
        <expression-component doc:name="Expression"><![CDATA[
import java.lang.Integer;

int firstValue = Integer.parseInt(flowVars.var1);
int secondValue = Integer.parseInt(flowVars.var2);
int result =  firstValue + secondValue;
payload =  result]]></expression-component>
        <object-to-string-transformer doc:name="Object to String"/>
        <logger message="#['Total '+message.payload]" level="INFO" doc:name="Logger"/>
    </flow>