com.fasterxml.jackson.databind.JsonMappingException#getMessage ( )源码实例Demo

@Override
public Object handle(Request request, Response response) throws Exception {
    try {
        ObjectMapper objectMapper = new ObjectMapper();
        V value = null;
        if (valueClass != EmptyPayload.class) {
            value = objectMapper.readValue(request.body(), valueClass);
        }
        Map<String, String> urlParams = request.params();
        Answer answer = process(value, urlParams, shouldReturnHtml(request));
        response.status(answer.getCode());
        if (shouldReturnHtml(request)) {
            response.type("text/html");
        } else {
            response.type("application/json");
        }
        response.body(answer.getBody());
        return answer.getBody();
    } catch (JsonMappingException e) {
        response.status(400);
        response.body(e.getMessage());
        return e.getMessage();
    }
}
 

public static Manifest readManifest (File file) throws IOException {
    String errorMessage = "";
    try {
        return mMapper.readValue(file, Manifest.class);
    } catch (JsonParseException jpe) {
        errorMessage = jpe.getMessage();
    } catch (JsonMappingException jme) {
        errorMessage = jme.getMessage();
    }
    LoggerFactory.getLogger("Bootloader").error("Error while parsing manifest " + file.getName() + ": " + errorMessage);
    return null;
}
 

public static void writeManifest (String fileName, Manifest manifest) throws IOException {
    String errorMessage = "";
    mMapper.enable(SerializationFeature.INDENT_OUTPUT);
    try {
        mMapper.writeValue(new File(fileName), manifest);
        return;
    } catch (JsonGenerationException jge) {
        errorMessage = jge.getMessage();
    } catch (JsonMappingException jme) {
        errorMessage = jme.getMessage();
    }
    LoggerFactory.getLogger("Bootloader").error("Could not save manifest to file " + fileName + ".\n" + errorMessage);
}
 

@Override
public void handle(HttpContext context, ModelContext<T> modelContext) throws Exception {

    try {

        var objectMapper = context.elepy().objectMapper();
        String body = context.request().body();

        T item = objectMapper.readValue(body, modelContext.getModelType());

        beforeCreate(item, context.request(), modelContext.getCrud());

        super.singleCreate(context, item, modelContext.getCrud(), modelContext);

        afterCreate(item, modelContext.getCrud());
        context.response().status(200);
        context.response().result(Message.of("Successfully created item", 200).withProperty("createdRecords", List.of(item)));

    } catch (JsonMappingException e) {
        throw new ElepyException("Error mapping SimpleCreate: " + e.getMessage());
    }
}