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Polish MappingJackson2JsonView

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This commit is contained in:
Rossen Stoyanchev
2014-06-09 09:38:26 -04:00
parent 5dc27ee134
commit 0cb6f8c88c
1 changed files with 36 additions and 37 deletions
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73
spring-webmvc/src/main/java/org/springframework/web/servlet/view/json/MappingJackson2JsonView.java
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@@ -32,6 +32,7 @@ import com.fasterxml.jackson.databind.SerializationFeature;
import org.springframework.http.converter.json.MappingJacksonValue;
import org.springframework.util.Assert;
import org.springframework.util.CollectionUtils;
import org.springframework.util.StringUtils;
import org.springframework.validation.BindingResult;
import org.springframework.web.servlet.View;
import org.springframework.web.servlet.view.AbstractView;
@@ -61,8 +62,6 @@ public class MappingJackson2JsonView extends AbstractView {
public static final String DEFAULT_JSONP_CONTENT_TYPE = "application/javascript";
public static final String[] DEFAULT_JSONP_PARAMETER_NAMES = {"jsonp", "callback"};
private ObjectMapper objectMapper = new ObjectMapper();
@@ -72,6 +71,8 @@ public class MappingJackson2JsonView extends AbstractView {
private Boolean prettyPrint;
private final List<String> jsonpParameterNames = new ArrayList<String>(Arrays.asList("jsonp", "callback"));
private Set<String> modelKeys;
private boolean extractValueFromSingleKeyModel = false;
@@ -80,8 +81,6 @@ public class MappingJackson2JsonView extends AbstractView {
private boolean updateContentLength = false;
private String[] jsonpParameterNames;
/**
* Construct a new {@code MappingJackson2JsonView}, setting the content type to {@code application/json}.
@@ -89,7 +88,6 @@ public class MappingJackson2JsonView extends AbstractView {
public MappingJackson2JsonView() {
setContentType(DEFAULT_CONTENT_TYPE);
setExposePathVariables(false);
this.jsonpParameterNames = DEFAULT_JSONP_PARAMETER_NAMES;
}
@@ -171,6 +169,23 @@ public class MappingJackson2JsonView extends AbstractView {
}
}
/**
* Set JSONP request parameter names. Each time a request has one of those
* parameters, the resulting JSON will be wrapped into a function named as
* specified by the JSONP request parameter value.
*
* <p>The parameter names configured by default are "jsonp" and "callback".
*
* @since 4.1
* @see <a href="http://en.wikipedia.org/wiki/JSONP">JSONP Wikipedia article</a>
*/
public void setJsonpParameterNames(Collection<String> jsonpParameters) {
this.jsonpParameterNames.clear();
if (jsonpParameters != null) {
this.jsonpParameterNames.addAll(jsonpParameters);
}
}
/**
* Set the attribute in the model that should be rendered by this view.
* When set, all other model attributes will be ignored.
@@ -242,21 +257,6 @@ public class MappingJackson2JsonView extends AbstractView {
this.updateContentLength = updateContentLength;
}
/**
* Set the names of the request parameters recognized as JSONP ones.
* Each time a request has one of those parameters, the resulting JSON will
* be wrapped into a function named as specified by the JSONP parameter value.
*
* Default JSONP parameter names are "jsonp" and "callback".
*
* @since 4.1
* @see <a href="http://en.wikipedia.org/wiki/JSONP">JSONP Wikipedia article</a>
*/
public void setJsonpParameterNames(Collection<String> jsonpParameterNames) {
Assert.isTrue(!CollectionUtils.isEmpty(jsonpParameterNames), "At least one JSONP query parameter name is required");
this.jsonpParameterNames = jsonpParameterNames.toArray(new String[jsonpParameterNames.size()]);
}
@Override
protected void prepareResponse(HttpServletRequest request, HttpServletResponse response) {
setResponseContentType(request, response);
@@ -268,23 +268,13 @@ public class MappingJackson2JsonView extends AbstractView {
}
}
@Override
protected void setResponseContentType(HttpServletRequest request, HttpServletResponse response) {
if (getJsonpParameterValue(request) != null) {
response.setContentType(DEFAULT_JSONP_CONTENT_TYPE);
}
else {
super.setResponseContentType(request, response);
}
}
@Override
protected void renderMergedOutputModel(Map<String, Object> model, HttpServletRequest request,
HttpServletResponse response) throws Exception {
OutputStream stream = (this.updateContentLength ? createTemporaryOutputStream() : response.getOutputStream());
Class<?> serializationView = (Class<?>)model.get(JsonView.class.getName());
Class<?> serializationView = (Class<?>) model.get(JsonView.class.getName());
String jsonpParameterValue = getJsonpParameterValue(request);
Object value = filterModel(model);
if(serializationView != null || jsonpParameterValue != null) {
@@ -301,14 +291,13 @@ public class MappingJackson2JsonView extends AbstractView {
}
private String getJsonpParameterValue(HttpServletRequest request) {
String jsonpParameterValue = null;
for(String jsonpParameterName : this.jsonpParameterNames) {
jsonpParameterValue = request.getParameter(jsonpParameterName);
if(jsonpParameterValue != null) {
break;
for(String name : this.jsonpParameterNames) {
String value = request.getParameter(name);
if (!StringUtils.isEmpty(value)) {
return value;
}
}
return jsonpParameterValue;
return null;
}
/**
@@ -380,4 +369,14 @@ public class MappingJackson2JsonView extends AbstractView {
}
}
@Override
protected void setResponseContentType(HttpServletRequest request, HttpServletResponse response) {
if (getJsonpParameterValue(request) != null) {
response.setContentType(DEFAULT_JSONP_CONTENT_TYPE);
}
else {
super.setResponseContentType(request, response);
}
}
}