这个组件比较简单，作用是根据请求URI来获取视图名称
直接看源码
接口：只有一个方法（获取视图名称）
public interface RequestToViewNameTranslator {
String getViewName(HttpServletRequest request) throws Exception;
}
实现类：默认只有一个，直接看源码
public class DefaultRequestToViewNameTranslator implements RequestToViewNameTranslator {
private static final String SLASH = "/";
private String prefix = "";
private String suffix = "";
private String separator = SLASH;
private boolean stripLeadingSlash = true;
private boolean stripTrailingSlash = true;
private boolean stripExtension = true;
private UrlPathHelper urlPathHelper = new UrlPathHelper();
public void setPrefix(String prefix) {
this.prefix = (prefix != null ? prefix : "");
}
public void setSuffix(String suffix) {
this.suffix = (suffix != null ? suffix : "");
}
public void setSeparator(String separator) {
this.separator = separator;
}
public void setStripLeadingSlash(boolean stripLeadingSlash) {
this.stripLeadingSlash = stripLeadingSlash;
}
public void setStripTrailingSlash(boolean stripTrailingSlash) {
this.stripTrailingSlash = stripTrailingSlash;
}
public void setStripExtension(boolean stripExtension) {
this.stripExtension = stripExtension;
}
public void setAlwaysUseFullPath(boolean alwaysUseFullPath) {
this.urlPathHelper.setAlwaysUseFullPath(alwaysUseFullPath);
}
public void setUrlDecode(boolean urlDecode) {
this.urlPathHelper.setUrlDecode(urlDecode);
}
public void setRemoveSemicolonContent(boolean removeSemicolonContent) {
this.urlPathHelper.setRemoveSemicolonContent(removeSemicolonContent);
}
public void setUrlPathHelper(UrlPathHelper urlPathHelper) {
Assert.notNull(urlPathHelper, "UrlPathHelper must not be null");
this.urlPathHelper = urlPathHelper;
}
@Override
public String getViewName(HttpServletRequest request) {
String lookupPath = this.urlPathHelper.getLookupPathForRequest(request);
return (this.prefix + transformPath(lookupPath) + this.suffix);
}
protected String transformPath(String lookupPath) {
String path = lookupPath;
if (this.stripLeadingSlash && path.startsWith(SLASH)) {
path = path.substring(1);
}
if (this.stripTrailingSlash && path.endsWith(SLASH)) {
path = path.substring(0, path.length() - 1);
}
if (this.stripExtension) {
path = StringUtils.stripFilenameExtension(path);
}
if (!SLASH.equals(this.separator)) {
path = StringUtils.replace(path, SLASH, this.separator);
}
return path;
}
}
