如何在 WSO2 ESB 中運行自定義應用程序

Question

我將 wso2 ESB 作為開發/部署應用程序的 ESB 選項之一，但我沒有看到任何說明如何在 wso2 ESB 中部署普通（不是 web，不是 ws...）主類並查看狀態的文檔一樣的。

任何人都可以建議如何運行一些簡單的 Java 應用程序——比如文件閱讀器，並在 ESB 中查看/監控應用程序狀態/日志？

感謝任何幫助。

感謝和問候 Raaghu.K

Answer 1

您可以使用“類”中介並調用您的自定義類在 WSO2ESB 中執行您的自定義 Java 代碼，請參閱https://docs.wso2.com/display/ESB481/Class+Mediator和https://docs.wso2.com/display /ESB481/寫+a+WSO2+ESB+中介

Answer 2

您可以編寫自己的自定義中介並在自定義類上擴展 AbstractMediator 類

public class DiscountQuoteMediator extends AbstractMediator {

private static final Log log = LogFactory.getLog(DiscountQuoteMediator.class);
private String discountFactor = "10";
private String bonusFor = "10";
private int bonusCount = 0;
public DiscountQuoteMediator() {}
public boolean mediate(MessageContext mc) {

    String price = mc.getEnvelope().getBody().getFirstElement().getFirstElement().
            getFirstChildWithName(new QName("http://services.samples/xsd", "last")).getText();

    //converting String properties into integers
    int discount = Integer.parseInt(discountFactor);
    int bonusNo = Integer.parseInt(bonusFor);
    double currentPrice = Double.parseDouble(price);

    //discounting factor is deducted from current price form every response
    Double lastPrice = new Double(currentPrice - currentPrice * discount / 100);

    //Special discount of 5% offers for the first responses as set in the bonusFor property
    if (bonusCount <= bonusNo) {
        lastPrice = new Double(lastPrice.doubleValue() - lastPrice.doubleValue() * 0.05);
        bonusCount++;
    }

    String discountedPrice = lastPrice.toString();

    mc.getEnvelope().getBody().getFirstElement().getFirstElement().getFirstChildWithName
            (new QName("http://services.samples/xsd", "last")).setText(discountedPrice);

    System.out.println("Quote value discounted.");
    System.out.println("Original price: " + price);
    System.out.println("Discounted price: " + discountedPrice);

    return true;
}

public String getType() {
    return null;
}

public void setTraceState(int traceState) {
    traceState = 0;
}

public int getTraceState() {
    return 0;
}

public void setDiscountFactor(String discount) {
    discountFactor = discount;
}

public String getDiscountFactor() {
    return discountFactor;
}

public void setBonusFor(String bonus) {
    bonusFor = bonus;
}

public String getBonusFor() {
    return bonusFor;
}

}

當您在 xml 流上調用 java 時：

 <class name="yourclass_package.DiscountQuoteMediator">
            <property name="discountFactor" value="10"/>
            <property name="bonusFor" value="5"/>
        </class>