我有一個 XML 模式，帶有一個元素name：<xsd:element name="name"> <xsd:complexType> <xsd:sequence> <xsd:element name="given" maxOccurs="unbounded" type="xsd:string"/> <xsd:element name="family" type="xsd:string"/> </xsd:sequence> </xsd:complexType></xsd:element>我需要將它映射到工作 java 類。我有一個帶有 JAXB XML 控制器的 Spring Boot 應(yīng)用程序，它需要：<name> <given>First</given> <given>Second</given> <family>Lastname</family></name>如果我使用自動模式源生成（使用 jaxb2-maven-plugin），我會得到一個類： @XmlAccessorType(XmlAccessType.FIELD) @XmlType(name = "", propOrder = { "given", "family" }) public static class Name { @XmlElement(required = true) protected List<String> given = new ArrayList<>(); @XmlElement(required = true) protected String family; public List<String> getGiven() { if (given == null) { given = new ArrayList<>(); } return this.given; } public void setGiven(List<String> given) { this.given = given; } public String getFamily() { return family; } public void setFamily(String value) { this.family = value; } }但問題是，當(dāng)我運(yùn)行 spring boot 應(yīng)用程序并使用上述 XML 調(diào)用它時，出現(xiàn)錯誤：*....Name["given"]); nested exception is com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of java.util.ArrayList out of VALUE_STRING token*我無法控制發(fā)送數(shù)據(jù)的格式，因此無法更改接收到的 XML。我嘗試了許多不同的解決方案，但我完全堅持這一點(diǎn)。你能幫我嗎？
1 回答
慕姐8265434
TA貢獻(xiàn)1813條經(jīng)驗(yàn) 獲得超2個贊
試試 @JacksonXmlElementWrapper(useWrapping = false)
例子
@Test
public void test2() throws JsonParseException, JsonMappingException, IOException {
ObjectMapper mapper = new XmlMapper();
Name name = mapper.readValue("<name>\n" + " <given>First</given>\n" + " <given>Second</given>\n"
+ " <family>Lastname</family>\n" + "</name>", Name.class);
System.out.println(toString(name));
}
public static class Name {
@JacksonXmlElementWrapper(useWrapping = false)
public List<String> given = new ArrayList<>();
@XmlElement(required = true)
public String family;
}
public String toString(Object obj) {
try {
StringWriter w = new StringWriter();
new ObjectMapper().configure(SerializationFeature.INDENT_OUTPUT, true).writeValue(w, obj);
return w.toString();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
印刷
{
"given" : [ "First", "Second" ],
"family" : "Lastname"
}
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