Question

我目前正在处理一个将值写入CmsXmlContent并将它们保存为文件的类。我有很多变数而且工作得很好但是一个字符串似乎很讨厌我...... 它每次都返回一个NullPointerException。

我试着写它，但是我非常认真地检查String是否为空并将其打印出来，只有一行上面的完美结果。

所以希望你可以帮助我：）

揭露：

public class Expose {
    private String address, bid, build, corridorNumber, corridorPiece, county,
        floor, form, houseType, mark, number, partner, price, registry,
        roofAngle, size, status, title, view, width;
    private List<String> features, infra, location, media, region, use,
        useType;
    private List<byte[]> documents, images;
    private List<ExposeAbsatz> paragraphs;

    // getters and setters
}

ExposeAbsatz：

public class ExposeAbsatz {
    private String content, headline;
    private byte[] image;

    // getters and setters
}

我的代码：

Locale de = Locale.GERMAN;
CmsXmlContent xmlContent = CmsXmlContentFactory.createDocument(cms,
        de, "UTF-8", CmsXmlContentDefinition.getContentDefinitionForType(cms, "expose"));
if (StringUtils.isNotEmpty(thisExpose.getTitle()))
    xmlContent.getValue("/titel", de).setStringValue(cms,
            StringUtils.stripToEmpty(thisExpose.getTitle()));
// works
if (StringUtils.isNotEmpty(thisExpose.getNumber()))
    xmlContent.getValue("/properties/number", de).setStringValue(
                    cms, StringUtils.stripToEmpty(thisExpose.getNumber()));
// works as well
if (thisExpose.getParagraphs() != null) {
    int i = 0;
    for (ExposeAbsatz currentExposeAbsatz : thisExpose.getParagraphs()) {
    String headline = StringUtils.stripToEmpty(currentExposeAbsatz.getHeadline());
        if (StringUtils.isNotEmpty(headline)) {
            System.out.println("headline[" + i + "] = " + headline);
            // headline[0] = aasd
            // absatz is minOccurs="4" maxOccurs="5"
            xmlContent.getValue("/absatz[" + i + "]/ueberschrift", de)
                                .setStringValue(cms, headline); // NullPointerException
            (...)
        }
        (...)
        i++;
    }
}

Java NullPointerException但String不为空

0 个答案: